13599320939 has 4 divisors (see below), whose sum is σ = 13600096224. Its totient is φ = 13598545656.

The previous prime is 13599320921. The next prime is 13599320941. The reversal of 13599320939 is 93902399531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93902399531 = 523 ⋅179545697.

It is a cyclic number.

It is not a de Polignac number, because 13599320939 - 2¹⁶ = 13599255403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13599320989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360707 + ... + 396620.

It is an arithmetic number, because the mean of its divisors is an integer number (3400024056).

Almost surely, 2^13599320939 is an apocalyptic number.

13599320939 is a deficient number, since it is larger than the sum of its proper divisors (775285).

13599320939 is an equidigital number, since it uses as much as digits as its factorization.

13599320939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775284.

The product of its (nonzero) digits is 1771470, while the sum is 53.

The spelling of 13599320939 in words is "thirteen billion, five hundred ninety-nine million, three hundred twenty thousand, nine hundred thirty-nine".