39990446439999 has 64 divisors (see below), whose sum is σ = 60717706334208. Its totient is φ = 23196765363200.

The previous prime is 39990446439989. The next prime is 39990446440027. The reversal of 39990446439999 is 99993464409993.

It is a Cunningham number, because it is equal to 6323800²-1.

It is not a de Polignac number, because 39990446439999 - 2¹¹ = 39990446437951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39990446439949) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 777801817 + ... + 777853229.

It is an arithmetic number, because the mean of its divisors is an integer number (948714161472).

Almost surely, 2^{39990446439999} is an apocalyptic number.

39990446439999 is a deficient number, since it is larger than the sum of its proper divisors (20727259894209).

39990446439999 is a wasteful number, since it uses less digits than its factorization.

39990446439999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62368.

The product of its (nonzero) digits is 16529940864, while the sum is 87.

The spelling of 39990446439999 in words is "thirty-nine trillion, nine hundred ninety billion, four hundred forty-six million, four hundred thirty-nine thousand, nine hundred ninety-nine".