13399107421 has 16 divisors (see below), whose sum is σ = 15499745280. Its totient is φ = 11345693040.

The previous prime is 13399107409. The next prime is 13399107479. The reversal of 13399107421 is 12470199331.

It is a cyclic number.

It is not a de Polignac number, because 13399107421 - 2⁵ = 13399107389 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 (13399107721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243976 + ... + 293806.

It is an arithmetic number, because the mean of its divisors is an integer number (968734080).

Almost surely, 2^13399107421 is an apocalyptic number.

It is an amenable number.

13399107421 is a deficient number, since it is larger than the sum of its proper divisors (2100637859).

13399107421 is a wasteful number, since it uses less digits than its factorization.

13399107421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50304.

The product of its (nonzero) digits is 40824, while the sum is 40.

The spelling of 13399107421 in words is "thirteen billion, three hundred ninety-nine million, one hundred seven thousand, four hundred twenty-one".