85023969 has 16 divisors (see below), whose sum is σ = 117520320. Its totient is φ = 54613440.

The previous prime is 85023959. The next prime is 85023973. The reversal of 85023969 is 96932058.

It is not a de Polignac number, because 85023969 - 2²¹ = 82926817 is a prime.

It is a super-2 number, since 2×85023969² = 14458150609025922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85023969.

It is not an unprimeable number, because it can be changed into a prime (85023949) 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, 65214 + ... + 66504.

It is an arithmetic number, because the mean of its divisors is an integer number (7345020).

Almost surely, 2^85023969 is an apocalyptic number.

It is an amenable number.

85023969 is a deficient number, since it is larger than the sum of its proper divisors (32496351).

85023969 is a wasteful number, since it uses less digits than its factorization.

85023969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 85023969 is about 9220.8442672024. The cubic root of 85023969 is about 439.7242918064.

The spelling of 85023969 in words is "eighty-five million, twenty-three thousand, nine hundred sixty-nine".