3644440494 has 16 divisors (see below), whose sum is σ = 7300663680. Its totient is φ = 1212849720.

The previous prime is 3644440487. The next prime is 3644440511. The reversal of 3644440494 is 4940444463.

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, 486922 + ... + 494349.

It is an arithmetic number, because the mean of its divisors is an integer number (456291480).

Almost surely, 2^3644440494 is an apocalyptic number.

3644440494 is an abundant number, since it is smaller than the sum of its proper divisors (3656223186).

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

3644440494 is a wasteful number, since it uses less digits than its factorization.

3644440494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981895.

The product of its (nonzero) digits is 663552, while the sum is 42.

The square root of 3644440494 is about 60369.2015352199. The cubic root of 3644440494 is about 1538.8996037984.

The spelling of 3644440494 in words is "three billion, six hundred forty-four million, four hundred forty thousand, four hundred ninety-four".