13717279 has 4 divisors (see below), whose sum is σ = 14009184. Its totient is φ = 13425376.

The previous prime is 13717273. The next prime is 13717289. The reversal of 13717279 is 97271731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97271731 = 4679 ⋅20789.

It is a cyclic number.

It is not a de Polignac number, because 13717279 - 2⁹ = 13716767 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 (13717273) 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, 145882 + ... + 145975.

It is an arithmetic number, because the mean of its divisors is an integer number (3502296).

Almost surely, 2^13717279 is an apocalyptic number.

13717279 is a deficient number, since it is larger than the sum of its proper divisors (291905).

13717279 is an equidigital number, since it uses as much as digits as its factorization.

13717279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291904.

The product of its digits is 18522, while the sum is 37.

The square root of 13717279 is about 3703.6845168022. The cubic root of 13717279 is about 239.3808054865.

The spelling of 13717279 in words is "thirteen million, seven hundred seventeen thousand, two hundred seventy-nine".