864444373 has 12 divisors (see below), whose sum is σ = 988926820. Its totient is φ = 751007232.

The previous prime is 864444367. The next prime is 864444377. The reversal of 864444373 is 373444468.

It can be written as a sum of positive squares in 6 ways, for example, as 44595684 + 819848689 = 6678^2 + 28633^2 .

It is not a de Polignac number, because 864444373 - 2²¹ = 862347221 is a prime.

It is a super-2 number, since 2×864444373² = 1494528148022726258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864444377) 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, 111288 + ... + 118801.

Almost surely, 2^864444373 is an apocalyptic number.

It is an amenable number.

864444373 is a deficient number, since it is larger than the sum of its proper divisors (124482447).

864444373 is a wasteful number, since it uses less digits than its factorization.

864444373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230136 (or 230119 counting only the distinct ones).

The product of its digits is 774144, while the sum is 43.

The square root of 864444373 is about 29401.4348799510. The cubic root of 864444373 is about 952.6038898079.

The spelling of 864444373 in words is "eight hundred sixty-four million, four hundred forty-four thousand, three hundred seventy-three".