13333979 has 4 divisors (see below), whose sum is σ = 13659240. Its totient is φ = 13008720.

The previous prime is 13333973. The next prime is 13333981. The reversal of 13333979 is 97933331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97933331 = 659 ⋅148609.

It is a cyclic number.

It is not a de Polignac number, because 13333979 - 2¹⁶ = 13268443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13333973) 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, 162569 + ... + 162650.

It is an arithmetic number, because the mean of its divisors is an integer number (3414810).

Almost surely, 2^13333979 is an apocalyptic number.

13333979 is a deficient number, since it is larger than the sum of its proper divisors (325261).

13333979 is an equidigital number, since it uses as much as digits as its factorization.

13333979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325260.

The product of its digits is 45927, while the sum is 38.

The square root of 13333979 is about 3651.5721271803. The cubic root of 13333979 is about 237.1300478500.

The spelling of 13333979 in words is "thirteen million, three hundred thirty-three thousand, nine hundred seventy-nine".