444402660 has 48 divisors (see below), whose sum is σ = 1340047296. Its totient is φ = 109391232.

The previous prime is 444402659. The next prime is 444402709. The reversal of 444402660 is 66204444.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284094 + ... + 285653.

It is an arithmetic number, because the mean of its divisors is an integer number (27917652).

Almost surely, 2^444402660 is an apocalyptic number.

It is an amenable number.

444402660 is an abundant number, since it is smaller than the sum of its proper divisors (895644636).

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

444402660 is a wasteful number, since it uses less digits than its factorization.

444402660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569772 (or 569770 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The square root of 444402660 is about 21080.8600393817. The cubic root of 444402660 is about 763.1189119950.

The spelling of 444402660 in words is "four hundred forty-four million, four hundred two thousand, six hundred sixty".