13320979 has 32 divisors (see below), whose sum is σ = 17473536. Its totient is φ = 9884160.

The previous prime is 13320977. The next prime is 13321003. The reversal of 13320979 is 97902331.

It is a cyclic number.

It is not a de Polignac number, because 13320979 - 2¹ = 13320977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13320971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84769 + ... + 84925.

It is an arithmetic number, because the mean of its divisors is an integer number (546048).

Almost surely, 2^13320979 is an apocalyptic number.

13320979 is a deficient number, since it is larger than the sum of its proper divisors (4152557).

13320979 is a wasteful number, since it uses less digits than its factorization.

13320979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 13320979 is about 3649.7916378884. The cubic root of 13320979 is about 237.0529592582.

It can be divided in two parts, 133 and 20979, that added together give a palindrome (21112).

The spelling of 13320979 in words is "thirteen million, three hundred twenty thousand, nine hundred seventy-nine".