869626969 has 16 divisors (see below), whose sum is σ = 909568000. Its totient is φ = 830768400.

The previous prime is 869626943. The next prime is 869626981. The reversal of 869626969 is 969626968.

It is a cyclic number.

It is not a de Polignac number, because 869626969 - 2⁵ = 869626937 is a prime.

It is a super-2 number, since 2×869626969² = 1512502130424253922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (869626169) 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, 434032 + ... + 436030.

It is an arithmetic number, because the mean of its divisors is an integer number (56848000).

Almost surely, 2^869626969 is an apocalyptic number.

It is an amenable number.

869626969 is a deficient number, since it is larger than the sum of its proper divisors (39941031).

869626969 is a wasteful number, since it uses less digits than its factorization.

869626969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260.

The product of its digits is 15116544, while the sum is 61.

The square root of 869626969 is about 29489.4382618591. The cubic root of 869626969 is about 954.5038106587.

Subtracting 869626969 from its reverse (969626968), we obtain a palindrome (99999999).

The spelling of 869626969 in words is "eight hundred sixty-nine million, six hundred twenty-six thousand, nine hundred sixty-nine".