4644484440 has 32 divisors (see below), whose sum is σ = 13933453680. Its totient is φ = 1238529152.

The previous prime is 4644484433. The next prime is 4644484477. The reversal of 4644484440 is 444844464.

It is a super-2 number, since 2×4644484440² = 43142471426804227200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 4644484392 and 4644484401.

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, 19351899 + ... + 19352138.

Almost surely, 2^4644484440 is an apocalyptic number.

4644484440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4644484440 is an abundant number, since it is smaller than the sum of its proper divisors (9288969240).

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

4644484440 is a wasteful number, since it uses less digits than its factorization.

4644484440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38704051 (or 38704047 counting only the distinct ones).

The product of its (nonzero) digits is 786432, while the sum is 42.

The square root of 4644484440 is about 68150.4544372229. The cubic root of 4644484440 is about 1668.4473407534.

The spelling of 4644484440 in words is "four billion, six hundred forty-four million, four hundred eighty-four thousand, four hundred forty".