13803979 has 16 divisors (see below), whose sum is σ = 16676352. Its totient is φ = 11170368.

The previous prime is 13803961. The next prime is 13803991. The reversal of 13803979 is 97930831.

13803979 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 13803979 - 2⁷ = 13803851 is a prime.

13803979 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (13803919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12847 + ... + 13879.

It is an arithmetic number, because the mean of its divisors is an integer number (1042272).

Almost surely, 2^13803979 is an apocalyptic number.

13803979 is a deficient number, since it is larger than the sum of its proper divisors (2872373).

13803979 is a wasteful number, since it uses less digits than its factorization.

13803979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146.

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

The square root of 13803979 is about 3715.3706409994. The cubic root of 13803979 is about 239.8840817528.

The spelling of 13803979 in words is "thirteen million, eight hundred three thousand, nine hundred seventy-nine".