89517857 has 12 divisors (see below), whose sum is σ = 105966420. Its totient is φ = 75118560.

The previous prime is 89517853. The next prime is 89517871. The reversal of 89517857 is 75871598.

It can be written as a sum of positive squares in 2 ways, for example, as 16654561 + 72863296 = 4081^2 + 8536^2 .

It is not a de Polignac number, because 89517857 - 2² = 89517853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89517851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26882 + ... + 30027.

It is an arithmetic number, because the mean of its divisors is an integer number (8830535).

Almost surely, 2^89517857 is an apocalyptic number.

It is an amenable number.

89517857 is a deficient number, since it is larger than the sum of its proper divisors (16448563).

89517857 is a wasteful number, since it uses less digits than its factorization.

89517857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56944 (or 56933 counting only the distinct ones).

The product of its digits is 705600, while the sum is 50.

The square root of 89517857 is about 9461.3876889175. The cubic root of 89517857 is about 447.3387902825.

The spelling of 89517857 in words is "eighty-nine million, five hundred seventeen thousand, eight hundred fifty-seven".