1399004365899 has 32 divisors (see below), whose sum is σ = 2138035910656. Its totient is φ = 797099512320.

The previous prime is 1399004365873. The next prime is 1399004365901. The reversal of 1399004365899 is 9985634009931.

It is not a de Polignac number, because 1399004365899 - 2¹² = 1399004361803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1399004360899) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49009959 + ... + 49038495.

It is an arithmetic number, because the mean of its divisors is an integer number (66813622208).

Almost surely, 2^{1399004365899} is an apocalyptic number.

1399004365899 is a deficient number, since it is larger than the sum of its proper divisors (739031544757).

1399004365899 is a wasteful number, since it uses less digits than its factorization.

1399004365899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35275.

The product of its (nonzero) digits is 56687040, while the sum is 66.

The spelling of 1399004365899 in words is "one trillion, three hundred ninety-nine billion, four million, three hundred sixty-five thousand, eight hundred ninety-nine".