4442494640 has 20 divisors (see below), whose sum is σ = 10328800224. Its totient is φ = 1776997824.

The previous prime is 4442494619. The next prime is 4442494687. The reversal of 4442494640 is 464942444.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27765512 + ... + 27765671.

Almost surely, 2^4442494640 is an apocalyptic number.

4442494640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4442494640 is an abundant number, since it is smaller than the sum of its proper divisors (5886305584).

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

4442494640 is a wasteful number, since it uses less digits than its factorization.

4442494640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55531196 (or 55531190 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 41.

The square root of 4442494640 is about 66652.0415291235. The cubic root of 4442494640 is about 1643.9009161556.

The spelling of 4442494640 in words is "four billion, four hundred forty-two million, four hundred ninety-four thousand, six hundred forty".