13056889 has 4 divisors (see below), whose sum is σ = 13179024. Its totient is φ = 12934756.

The previous prime is 13056887. The next prime is 13056917. The reversal of 13056889 is 98865031.

It is a happy number.

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: 98865031 = 29 ⋅3409139.

It is a cyclic number.

It is not a de Polignac number, because 13056889 - 2¹ = 13056887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13056881) 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, 60907 + ... + 61120.

It is an arithmetic number, because the mean of its divisors is an integer number (3294756).

Almost surely, 2^13056889 is an apocalyptic number.

It is an amenable number.

13056889 is a deficient number, since it is larger than the sum of its proper divisors (122135).

13056889 is a wasteful number, since it uses less digits than its factorization.

13056889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122134.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 13056889 is about 3613.4317483523. The cubic root of 13056889 is about 235.4759570540.

The spelling of 13056889 in words is "thirteen million, fifty-six thousand, eight hundred eighty-nine".