40079904446399 has 4 divisors (see below), whose sum is σ = 40081620439464. Its totient is φ = 40078188453336.

The previous prime is 40079904446363. The next prime is 40079904446509. The reversal of 40079904446399 is 99364440997004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40079904446399 - 2¹⁶ = 40079904380863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40079904476399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 857961497 + ... + 858008210.

It is an arithmetic number, because the mean of its divisors is an integer number (10020405109866).

Almost surely, 2^{40079904446399} is an apocalyptic number.

40079904446399 is a deficient number, since it is larger than the sum of its proper divisors (1715993065).

40079904446399 is a wasteful number, since it uses less digits than its factorization.

40079904446399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715993064.

The product of its (nonzero) digits is 211631616, while the sum is 68.

The spelling of 40079904446399 in words is "forty trillion, seventy-nine billion, nine hundred four million, four hundred forty-six thousand, three hundred ninety-nine".