865794444 has 24 divisors (see below), whose sum is σ = 2024348928. Its totient is φ = 288003600.

The previous prime is 865794437. The next prime is 865794463. The reversal of 865794444 is 444497568.

It is a happy number.

It is a super-2 number, since 2×865794444² = 1499200038522538272, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 68232 + ... + 79919.

It is an arithmetic number, because the mean of its divisors is an integer number (84347872).

Almost surely, 2^865794444 is an apocalyptic number.

It is an amenable number.

865794444 is an abundant number, since it is smaller than the sum of its proper divisors (1158554484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

865794444 is a wasteful number, since it uses less digits than its factorization.

865794444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148645 (or 148643 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 51.

The square root of 865794444 is about 29424.3851932373. The cubic root of 865794444 is about 953.0995507515.

The spelling of 865794444 in words is "eight hundred sixty-five million, seven hundred ninety-four thousand, four hundred forty-four".