444989910 has 32 divisors (see below), whose sum is σ = 1069085952. Its totient is φ = 118540640.

The previous prime is 444989821. The next prime is 444989911. The reversal of 444989910 is 19989444.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 444989910.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444989911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23737 + ... + 38123.

It is an arithmetic number, because the mean of its divisors is an integer number (33408936).

Almost surely, 2^444989910 is an apocalyptic number.

444989910 is an abundant number, since it is smaller than the sum of its proper divisors (624096042).

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

444989910 is a wasteful number, since it uses less digits than its factorization.

444989910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15428.

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 444989910 is about 21094.7839524372. The cubic root of 444989910 is about 763.4549018298.

The spelling of 444989910 in words is "four hundred forty-four million, nine hundred eighty-nine thousand, nine hundred ten".