869968731 has 16 divisors (see below), whose sum is σ = 1185596928. Its totient is φ = 567180000.

The previous prime is 869968711. The next prime is 869968787. The reversal of 869968731 is 137869968.

It is not a de Polignac number, because 869968731 - 2⁵ = 869968699 is a prime.

It is a super-2 number, since 2×869968731² = 1513691185835500722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (869968711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316021 + ... + 318761.

It is an arithmetic number, because the mean of its divisors is an integer number (74099808).

Almost surely, 2^869968731 is an apocalyptic number.

869968731 is a deficient number, since it is larger than the sum of its proper divisors (315628197).

869968731 is a wasteful number, since it uses less digits than its factorization.

869968731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5042.

The product of its digits is 3919104, while the sum is 57.

The square root of 869968731 is about 29495.2323435500. The cubic root of 869968731 is about 954.6288337696.

The spelling of 869968731 in words is "eight hundred sixty-nine million, nine hundred sixty-eight thousand, seven hundred thirty-one".