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969369893 = 2129455317
BaseRepresentation
bin111001110001110…
…110100100100101
32111120001002111122
4321301312210211
53441124314033
6240104543325
733010336202
oct7161664445
92446032448
10969369893
11458202a48
12230781b45
13125aa446b
1492a56ca9
155a180a98
hex39c76925

969369893 has 4 divisors (see below), whose sum is σ = 969827340. Its totient is φ = 968912448.

The previous prime is 969369883. The next prime is 969369917. The reversal of 969369893 is 398963969.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 398963969 = 1432727847.

It can be written as a sum of positive squares in 2 ways, for example, as 401882209 + 567487684 = 20047^2 + 23822^2 .

It is a cyclic number.

It is not a de Polignac number, because 969369893 - 26 = 969369829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (969369803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225530 + ... + 229787.

It is an arithmetic number, because the mean of its divisors is an integer number (242456835).

Almost surely, 2969369893 is an apocalyptic number.

It is an amenable number.

969369893 is a deficient number, since it is larger than the sum of its proper divisors (457447).

969369893 is a wasteful number, since it uses less digits than its factorization.

969369893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457446.

The product of its digits is 17006112, while the sum is 62.

The square root of 969369893 is about 31134.7056032332. The cubic root of 969369893 is about 989.6839085425.

The spelling of 969369893 in words is "nine hundred sixty-nine million, three hundred sixty-nine thousand, eight hundred ninety-three".

Divisors: 1 2129 455317 969369893