13597789 has 4 divisors (see below), whose sum is σ = 13828320. Its totient is φ = 13367260.

The previous prime is 13597777. The next prime is 13597799. The reversal of 13597789 is 98779531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98779531 = 71 ⋅1391261.

It is a cyclic number.

It is not a de Polignac number, because 13597789 - 2⁹ = 13597277 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 (13597729) 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, 115177 + ... + 115294.

It is an arithmetic number, because the mean of its divisors is an integer number (3457080).

Almost surely, 2^13597789 is an apocalyptic number.

It is an amenable number.

13597789 is a deficient number, since it is larger than the sum of its proper divisors (230531).

13597789 is an equidigital number, since it uses as much as digits as its factorization.

13597789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230530.

The product of its digits is 476280, while the sum is 49.

The square root of 13597789 is about 3687.5179999561. The cubic root of 13597789 is about 238.6837024328.

The spelling of 13597789 in words is "thirteen million, five hundred ninety-seven thousand, seven hundred eighty-nine".