89807859857 has 4 divisors (see below), whose sum is σ = 93712549440. Its totient is φ = 85903170276.

The previous prime is 89807859803. The next prime is 89807859877. The reversal of 89807859857 is 75895870898.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 89807859857 - 2³² = 85512892561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89807859877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1952344757 + ... + 1952344802.

It is an arithmetic number, because the mean of its divisors is an integer number (23428137360).

Almost surely, 2^89807859857 is an apocalyptic number.

It is an amenable number.

89807859857 is a deficient number, since it is larger than the sum of its proper divisors (3904689583).

89807859857 is a wasteful number, since it uses less digits than its factorization.

89807859857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3904689582.

The product of its (nonzero) digits is 406425600, while the sum is 74.

The spelling of 89807859857 in words is "eighty-nine billion, eight hundred seven million, eight hundred fifty-nine thousand, eight hundred fifty-seven".