864544924 has 12 divisors (see below), whose sum is σ = 1513734264. Its totient is φ = 432049424.

The previous prime is 864544921. The next prime is 864544927. The reversal of 864544924 is 429445468.

It is an interprime number because it is at equal distance from previous prime (864544921) and next prime (864544927).

It is a super-2 number, since 2×864544924² = 1494875851228331552, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864544921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46882 + ... + 62665.

It is an arithmetic number, because the mean of its divisors is an integer number (126144522).

Almost surely, 2^864544924 is an apocalyptic number.

It is an amenable number.

864544924 is a deficient number, since it is larger than the sum of its proper divisors (649189340).

864544924 is a wasteful number, since it uses less digits than its factorization.

864544924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111524 (or 111522 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 46.

The square root of 864544924 is about 29403.1447977933. The cubic root of 864544924 is about 952.6408235745.

It can be divided in two parts, 86454 and 4924, that added together give a triangular number (91378 = T₄₂₇).

The spelling of 864544924 in words is "eight hundred sixty-four million, five hundred forty-four thousand, nine hundred twenty-four".