89816857 has 16 divisors (see below), whose sum is σ = 105336000. Its totient is φ = 75829824.

The previous prime is 89816851. The next prime is 89816861. The reversal of 89816857 is 75861898.

It is a cyclic number.

It is not a de Polignac number, because 89816857 - 2³ = 89816849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89816851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 894 + ... + 13432.

It is an arithmetic number, because the mean of its divisors is an integer number (6583500).

Almost surely, 2^89816857 is an apocalyptic number.

It is an amenable number.

89816857 is a deficient number, since it is larger than the sum of its proper divisors (15519143).

89816857 is a wasteful number, since it uses less digits than its factorization.

89816857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12600.

The product of its digits is 967680, while the sum is 52.

The square root of 89816857 is about 9477.1755813639. The cubic root of 89816857 is about 447.8362912289.

The spelling of 89816857 in words is "eighty-nine million, eight hundred sixteen thousand, eight hundred fifty-seven".