864626469 has 16 divisors (see below), whose sum is σ = 1317975168. Its totient is φ = 493903872.

The previous prime is 864626467. The next prime is 864626479. The reversal of 864626469 is 964626468.

It is not a de Polignac number, because 864626469 - 2¹ = 864626467 is a prime.

It is a super-2 number, since 2×864626469² = 1495157861790815922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864626461) 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, 82789 + ... + 92645.

It is an arithmetic number, because the mean of its divisors is an integer number (82373448).

Almost surely, 2^864626469 is an apocalyptic number.

It is an amenable number.

864626469 is a deficient number, since it is larger than the sum of its proper divisors (453348699).

864626469 is a wasteful number, since it uses less digits than its factorization.

864626469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14044.

The product of its digits is 2985984, while the sum is 51.

The square root of 864626469 is about 29404.5314364980. The cubic root of 864626469 is about 952.6707740727.

Subtracting 864626469 from its reverse (964626468), we obtain a palindrome (99999999).

The spelling of 864626469 in words is "eight hundred sixty-four million, six hundred twenty-six thousand, four hundred sixty-nine".