444402380 has 24 divisors (see below), whose sum is σ = 965427120. Its totient is φ = 171631040.

The previous prime is 444402367. The next prime is 444402383. The reversal of 444402380 is 83204444.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (444402383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 382526 + ... + 383685.

It is an arithmetic number, because the mean of its divisors is an integer number (40226130).

Almost surely, 2^444402380 is an apocalyptic number.

It is an amenable number.

444402380 is an abundant number, since it is smaller than the sum of its proper divisors (521024740).

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

444402380 is a wasteful number, since it uses less digits than its factorization.

444402380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766249 (or 766247 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

The square root of 444402380 is about 21080.8533982854. The cubic root of 444402380 is about 763.1187517250.

The spelling of 444402380 in words is "four hundred forty-four million, four hundred two thousand, three hundred eighty".