444640494 has 16 divisors (see below), whose sum is σ = 897916032. Its totient is φ = 146774328.

The previous prime is 444640447. The next prime is 444640501. The reversal of 444640494 is 494046444.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359124 + ... + 360359.

It is an arithmetic number, because the mean of its divisors is an integer number (56119752).

Almost surely, 2^444640494 is an apocalyptic number.

444640494 is an abundant number, since it is smaller than the sum of its proper divisors (453275538).

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

444640494 is a wasteful number, since it uses less digits than its factorization.

444640494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719591.

The product of its (nonzero) digits is 221184, while the sum is 39.

The square root of 444640494 is about 21086.5002786143. The cubic root of 444640494 is about 763.2550222331.

The spelling of 444640494 in words is "four hundred forty-four million, six hundred forty thousand, four hundred ninety-four".