13599489 has 4 divisors (see below), whose sum is σ = 18132656. Its totient is φ = 9066324.

The previous prime is 13599479. The next prime is 13599491. The reversal of 13599489 is 98499531.

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.

It is not a de Polignac number, because 13599489 - 2⁷ = 13599361 is a prime.

It is a super-2 number, since 2×13599489² = 369892202122242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13599409) 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, 2266579 + ... + 2266584.

It is an arithmetic number, because the mean of its divisors is an integer number (4533164).

Almost surely, 2^13599489 is an apocalyptic number.

It is an amenable number.

13599489 is a deficient number, since it is larger than the sum of its proper divisors (4533167).

13599489 is an equidigital number, since it uses as much as digits as its factorization.

13599489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4533166.

The product of its digits is 349920, while the sum is 48.

The square root of 13599489 is about 3687.7485001014. The cubic root of 13599489 is about 238.6936487896.

The spelling of 13599489 in words is "thirteen million, five hundred ninety-nine thousand, four hundred eighty-nine".