43990014621 has 16 divisors (see below), whose sum is σ = 67310553728. Its totient is φ = 25032844800.

The previous prime is 43990014583. The next prime is 43990014631. The reversal of 43990014621 is 12641009934.

It is not a de Polignac number, because 43990014621 - 2⁶ = 43990014557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43990014621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43990014631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4340920 + ... + 4351041.

It is an arithmetic number, because the mean of its divisors is an integer number (4206909608).

Almost surely, 2^43990014621 is an apocalyptic number.

It is an amenable number.

43990014621 is a deficient number, since it is larger than the sum of its proper divisors (23320539107).

43990014621 is a wasteful number, since it uses less digits than its factorization.

43990014621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8692212.

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 43990014621 in words is "forty-three billion, nine hundred ninety million, fourteen thousand, six hundred twenty-one".