869959923 has 16 divisors (see below), whose sum is σ = 1339322880. Its totient is φ = 491993856.

The previous prime is 869959891. The next prime is 869959931. The reversal of 869959923 is 329959968.

It is not a de Polignac number, because 869959923 - 2⁵ = 869959891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (869959933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211503 + ... + 215576.

It is an arithmetic number, because the mean of its divisors is an integer number (83707680).

Almost surely, 2^869959923 is an apocalyptic number.

869959923 is a deficient number, since it is larger than the sum of its proper divisors (469362957).

869959923 is a wasteful number, since it uses less digits than its factorization.

869959923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427186.

The product of its digits is 9447840, while the sum is 60.

The square root of 869959923 is about 29495.0830309053. The cubic root of 869959923 is about 954.6256120450.

The spelling of 869959923 in words is "eight hundred sixty-nine million, nine hundred fifty-nine thousand, nine hundred twenty-three".