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8383005397 = 131213531613
BaseRepresentation
bin1111100111010101…
…01000001011010101
3210122020002210112101
413303222220023111
5114132022133042
63503500522101
7414511240654
oct76352501325
923566083471
108383005397
113611a96038
12175b550331
13a379b4230
145974c719b
15340e536b7
hex1f3aa82d5

8383005397 has 8 divisors (see below), whose sum is σ = 9035311544. Its totient is φ = 7731764928.

The previous prime is 8383005377. The next prime is 8383005401. The reversal of 8383005397 is 7935003838.

It is a happy number.

8383005397 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5447556 + 8377557841 = 2334^2 + 91529^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-8383005397 is a prime.

It is a super-2 number, since 2×83830053972 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8383005377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250038 + ... + 281575.

It is an arithmetic number, because the mean of its divisors is an integer number (1129413943).

Almost surely, 28383005397 is an apocalyptic number.

It is an amenable number.

8383005397 is a deficient number, since it is larger than the sum of its proper divisors (652306147).

8383005397 is a wasteful number, since it uses less digits than its factorization.

8383005397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532839.

The product of its (nonzero) digits is 544320, while the sum is 46.

The square root of 8383005397 is about 91558.7537977664. The cubic root of 8383005397 is about 2031.4208950125.

The spelling of 8383005397 in words is "eight billion, three hundred eighty-three million, five thousand, three hundred ninety-seven".

Divisors: 1 13 1213 15769 531613 6910969 644846569 8383005397