13921367 has 4 divisors (see below), whose sum is σ = 13999320. Its totient is φ = 13843416.

The previous prime is 13921333. The next prime is 13921373. The reversal of 13921367 is 76312931.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13921367 - 2¹⁴ = 13904983 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 (13921067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38708 + ... + 39065.

It is an arithmetic number, because the mean of its divisors is an integer number (3499830).

Almost surely, 2^13921367 is an apocalyptic number.

13921367 is a deficient number, since it is larger than the sum of its proper divisors (77953).

13921367 is an equidigital number, since it uses as much as digits as its factorization.

13921367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77952.

The product of its digits is 6804, while the sum is 32.

The square root of 13921367 is about 3731.1348139675. The cubic root of 13921367 is about 240.5621486940.

The spelling of 13921367 in words is "thirteen million, nine hundred twenty-one thousand, three hundred sixty-seven".