13398889 has 4 divisors (see below), whose sum is σ = 15313024. Its totient is φ = 11484756.

The previous prime is 13398883. The next prime is 13398893. The reversal of 13398889 is 98889331.

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: 98889331 = 1091 ⋅90641.

It is a cyclic number.

It is not a de Polignac number, because 13398889 - 2¹¹ = 13396841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13398883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 957057 + ... + 957070.

It is an arithmetic number, because the mean of its divisors is an integer number (3828256).

Almost surely, 2^13398889 is an apocalyptic number.

It is an amenable number.

13398889 is a deficient number, since it is larger than the sum of its proper divisors (1914135).

13398889 is an equidigital number, since it uses as much as digits as its factorization.

13398889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914134.

The product of its digits is 373248, while the sum is 49.

The square root of 13398889 is about 3660.4492893633. The cubic root of 13398889 is about 237.5142093068.

The spelling of 13398889 in words is "thirteen million, three hundred ninety-eight thousand, eight hundred eighty-nine".