89390865 has 32 divisors (see below), whose sum is σ = 147474432. Its totient is φ = 46208000.

The previous prime is 89390843. The next prime is 89390869. The reversal of 89390865 is 56809398.

It is not a de Polignac number, because 89390865 - 2¹⁰ = 89389841 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89390869) 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, 117085 + ... + 117845.

It is an arithmetic number, because the mean of its divisors is an integer number (4608576).

Almost surely, 2^89390865 is an apocalyptic number.

It is an amenable number.

89390865 is a deficient number, since it is larger than the sum of its proper divisors (58083567).

89390865 is a wasteful number, since it uses less digits than its factorization.

89390865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001.

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 89390865 is about 9454.6742408187. The cubic root of 89390865 is about 447.1271552934.

The spelling of 89390865 in words is "eighty-nine million, three hundred ninety thousand, eight hundred sixty-five".