865882969 has 12 divisors (see below), whose sum is σ = 1008413904. Its totient is φ = 741329064.

The previous prime is 865882961. The next prime is 865882987. The reversal of 865882969 is 969288568.

It is not a de Polignac number, because 865882969 - 2³ = 865882961 is a prime.

It is a super-2 number, since 2×865882969² = 1499506632008509922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (865882961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34702 + ... + 54184.

It is an arithmetic number, because the mean of its divisors is an integer number (84034492).

Almost surely, 2^865882969 is an apocalyptic number.

It is an amenable number.

865882969 is a deficient number, since it is larger than the sum of its proper divisors (142530935).

865882969 is a wasteful number, since it uses less digits than its factorization.

865882969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20404 (or 20397 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 61.

The square root of 865882969 is about 29425.8894343060. The cubic root of 865882969 is about 953.1320335434.

The spelling of 865882969 in words is "eight hundred sixty-five million, eight hundred eighty-two thousand, nine hundred sixty-nine".