43989799820 has 24 divisors (see below), whose sum is σ = 93043179600. Its totient is φ = 17469329472.

The previous prime is 43989799753. The next prime is 43989799943. The reversal of 43989799820 is 2899798934.

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, 7909055 + ... + 7914614.

It is an arithmetic number, because the mean of its divisors is an integer number (3876799150).

Almost surely, 2^43989799820 is an apocalyptic number.

It is an amenable number.

43989799820 is an abundant number, since it is smaller than the sum of its proper divisors (49053379780).

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

43989799820 is a wasteful number, since it uses less digits than its factorization.

43989799820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15823817 (or 15823815 counting only the distinct ones).

The product of its (nonzero) digits is 70543872, while the sum is 68.

The spelling of 43989799820 in words is "forty-three billion, nine hundred eighty-nine million, seven hundred ninety-nine thousand, eight hundred twenty".