13072879 has 4 divisors (see below), whose sum is σ = 13081576. Its totient is φ = 13064184.

The previous prime is 13072861. The next prime is 13072889. The reversal of 13072879 is 97827031.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 97827031 = 103 ⋅949777.

It is a 3-Lehmer number, since φ(13072879) divides (13072879-1)³.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13072879 is a prime.

It is a deceptive number, since it divides R_13072878.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13072859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1449 + ... + 5314.

It is an arithmetic number, because the mean of its divisors is an integer number (3270394).

Almost surely, 2^13072879 is an apocalyptic number.

13072879 is the 1933-rd nonagonal number.

13072879 is a deficient number, since it is larger than the sum of its proper divisors (8697).

13072879 is an equidigital number, since it uses as much as digits as its factorization.

13072879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8696.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 13072879 is about 3615.6436494765. The cubic root of 13072879 is about 235.5720423356.

It can be divided in two parts, 1307 and 2879, that added together give a triangular number (4186 = T₉₁).

The spelling of 13072879 in words is "thirteen million, seventy-two thousand, eight hundred seventy-nine".