13172439 has 16 divisors (see below), whose sum is σ = 20563200. Its totient is φ = 7343040.

The previous prime is 13172429. The next prime is 13172441. The reversal of 13172439 is 93427131.

It is not a de Polignac number, because 13172439 - 2⁷ = 13172311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13172429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6789 + ... + 8510.

It is an arithmetic number, because the mean of its divisors is an integer number (1285200).

Almost surely, 2^13172439 is an apocalyptic number.

13172439 is a deficient number, since it is larger than the sum of its proper divisors (7390761).

13172439 is a wasteful number, since it uses less digits than its factorization.

13172439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15350.

The product of its digits is 4536, while the sum is 30.

The square root of 13172439 is about 3629.3854851751. The cubic root of 13172439 is about 236.1685511903.

The spelling of 13172439 in words is "thirteen million, one hundred seventy-two thousand, four hundred thirty-nine".