857609883 has 32 divisors (see below), whose sum is σ = 1382427200. Its totient is φ = 522298368.

The previous prime is 857609873. The next prime is 857609891. The reversal of 857609883 is 388906758.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-857609883 is a prime.

It is a super-2 number, since 2×857609883² = 1470989422838547378, which contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (857609813) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21453 + ... + 46641.

It is an arithmetic number, because the mean of its divisors is an integer number (43200850).

Almost surely, 2^857609883 is an apocalyptic number.

857609883 is a deficient number, since it is larger than the sum of its proper divisors (524817317).

857609883 is a wasteful number, since it uses less digits than its factorization.

857609883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25308 (or 25302 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The square root of 857609883 is about 29284.9770872371. The cubic root of 857609883 is about 950.0867448030.

The spelling of 857609883 in words is "eight hundred fifty-seven million, six hundred nine thousand, eight hundred eighty-three".