8957857 has 6 divisors (see below), whose sum is σ = 9090914. Its totient is φ = 8826720.

The previous prime is 8957843. The next prime is 8957887. The reversal of 8957857 is 7587598.

It can be written as a sum of positive squares in only one way, i.e., 7667361 + 1290496 = 2769^2 + 1136^2 .

It is not a de Polignac number, because 8957857 - 2²³ = 569249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8957857.

It is not an unprimeable number, because it can be changed into a prime (8957887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4153 + ... + 5929.

Almost surely, 2^8957857 is an apocalyptic number.

It is an amenable number.

8957857 is a deficient number, since it is larger than the sum of its proper divisors (133057).

8957857 is an equidigital number, since it uses as much as digits as its factorization.

8957857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919 (or 1848 counting only the distinct ones).

The product of its digits is 705600, while the sum is 49.

The square root of 8957857 is about 2992.9679249868. The cubic root of 8957857 is about 207.6832039518.

The spelling of 8957857 in words is "eight million, nine hundred fifty-seven thousand, eight hundred fifty-seven".