13391089 has 8 divisors (see below), whose sum is σ = 13659840. Its totient is φ = 13124496.

The previous prime is 13391057. The next prime is 13391093. The reversal of 13391089 is 98019331.

13391089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13391089 - 2⁵ = 13391057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13391689) 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, 17652 + ... + 18394.

It is an arithmetic number, because the mean of its divisors is an integer number (1707480).

Almost surely, 2^13391089 is an apocalyptic number.

It is an amenable number.

13391089 is a deficient number, since it is larger than the sum of its proper divisors (268751).

13391089 is an equidigital number, since it uses as much as digits as its factorization.

13391089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 13391089 is about 3659.3836912792. The cubic root of 13391089 is about 237.4681116928.

The spelling of 13391089 in words is "thirteen million, three hundred ninety-one thousand, eighty-nine".