444640404 has 24 divisors (see below), whose sum is σ = 1117301920. Its totient is φ = 136812384.

The previous prime is 444640387. The next prime is 444640447. The reversal of 444640404 is 404046444.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1424974 + ... + 1425285.

Almost surely, 2^444640404 is an apocalyptic number.

It is an amenable number.

444640404 is an abundant number, since it is smaller than the sum of its proper divisors (672661516).

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

444640404 is a wasteful number, since it uses less digits than its factorization.

444640404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2850279 (or 2850277 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

The square root of 444640404 is about 21086.4981445474. The cubic root of 444640404 is about 763.2549707361.

Adding to 444640404 its reverse (404046444), we get a palindrome (848686848).

It can be divided in two parts, 4446 and 40404, that added together give a triangular number (44850 = T₂₉₉).

The spelling of 444640404 in words is "four hundred forty-four million, six hundred forty thousand, four hundred four".