444747906 has 24 divisors (see below), whose sum is σ = 965728764. Its totient is φ = 147924960.

The previous prime is 444747899. The next prime is 444747911. The reversal of 444747906 is 609747444.

It can be written as a sum of positive squares in 2 ways, for example, as 434347281 + 10400625 = 20841^2 + 3225^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18501 + ... + 35096.

Almost surely, 2^444747906 is an apocalyptic number.

444747906 is an abundant number, since it is smaller than the sum of its proper divisors (520980858).

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

444747906 is a wasteful number, since it uses less digits than its factorization.

444747906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54066 (or 54063 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The square root of 444747906 is about 21089.0470623971. The cubic root of 444747906 is about 763.3164772354.

The spelling of 444747906 in words is "four hundred forty-four million, seven hundred forty-seven thousand, nine hundred six".