13992379 has 4 divisors (see below), whose sum is σ = 14728840. Its totient is φ = 13255920.

The previous prime is 13992367. The next prime is 13992383. The reversal of 13992379 is 97329931.

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

It is not a de Polignac number, because 13992379 - 2²³ = 5603771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13993379) 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, 368202 + ... + 368239.

It is an arithmetic number, because the mean of its divisors is an integer number (3682210).

Almost surely, 2^13992379 is an apocalyptic number.

13992379 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13992379 is a deficient number, since it is larger than the sum of its proper divisors (736461).

13992379 is an equidigital number, since it uses as much as digits as its factorization.

13992379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736460.

The product of its digits is 91854, while the sum is 43.

The square root of 13992379 is about 3740.6388491807. The cubic root of 13992379 is about 240.9704858745.

The spelling of 13992379 in words is "thirteen million, nine hundred ninety-two thousand, three hundred seventy-nine".