13172889 has 8 divisors (see below), whose sum is σ = 17852032. Its totient is φ = 8637840.

The previous prime is 13172869. The next prime is 13172893. The reversal of 13172889 is 98827131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13172889 - 2⁸ = 13172633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13172839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35809 + ... + 36174.

It is an arithmetic number, because the mean of its divisors is an integer number (2231504).

Almost surely, 2^13172889 is an apocalyptic number.

It is an amenable number.

13172889 is a deficient number, since it is larger than the sum of its proper divisors (4679143).

13172889 is an equidigital number, since it uses as much as digits as its factorization.

13172889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72047.

The product of its digits is 24192, while the sum is 39.

The square root of 13172889 is about 3629.4474786116. The cubic root of 13172889 is about 236.1712405084.

It can be divided in two parts, 131 and 72889, that multiplied together give a palindrome (9548459).

The spelling of 13172889 in words is "thirteen million, one hundred seventy-two thousand, eight hundred eighty-nine".