13901279 has 4 divisors (see below), whose sum is σ = 15887184. Its totient is φ = 11915376.

The previous prime is 13901273. The next prime is 13901297. The reversal of 13901279 is 97210931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97210931 = 151 ⋅643781.

It is a cyclic number.

It is not a de Polignac number, because 13901279 - 2⁴ = 13901263 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 (13901273) 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, 992942 + ... + 992955.

It is an arithmetic number, because the mean of its divisors is an integer number (3971796).

Almost surely, 2^13901279 is an apocalyptic number.

13901279 is a deficient number, since it is larger than the sum of its proper divisors (1985905).

13901279 is an equidigital number, since it uses as much as digits as its factorization.

13901279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1985904.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 13901279 is about 3728.4418997753. The cubic root of 13901279 is about 240.4463856698.

The spelling of 13901279 in words is "thirteen million, nine hundred one thousand, two hundred seventy-nine".