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8380993 = 23477753
BaseRepresentation
bin11111111110001001000001
3120202210120011
4133332021001
54121142433
6455344521
7131144245
oct37761101
916683504
108380993
114804845
122982141
13197598a
141182425
15b083cd
hex7fe241

8380993 has 8 divisors (see below), whose sum is σ = 8932608. Its totient is φ = 7845024.

The previous prime is 8380991. The next prime is 8381003. The reversal of 8380993 is 3990838.

8380993 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 8380993 - 21 = 8380991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8380991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2796 + ... + 4957.

It is an arithmetic number, because the mean of its divisors is an integer number (1116576).

Almost surely, 28380993 is an apocalyptic number.

It is an amenable number.

8380993 is a deficient number, since it is larger than the sum of its proper divisors (551615).

8380993 is a wasteful number, since it uses less digits than its factorization.

8380993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7823.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 8380993 is about 2894.9944732244. The cubic root of 8380993 is about 203.1258329907.

The spelling of 8380993 in words is "eight million, three hundred eighty thousand, nine hundred ninety-three".

Divisors: 1 23 47 1081 7753 178319 364391 8380993