13089855 has 8 divisors (see below), whose sum is σ = 20943792. Its totient is φ = 6981248.

The previous prime is 13089833. The next prime is 13089863. The reversal of 13089855 is 55898031.

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

It is a cyclic number.

It is not a de Polignac number, because 13089855 - 2¹⁴ = 13073471 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436314 + ... + 436343.

It is an arithmetic number, because the mean of its divisors is an integer number (2617974).

Almost surely, 2^13089855 is an apocalyptic number.

13089855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13089855 is a deficient number, since it is larger than the sum of its proper divisors (7853937).

13089855 is an equidigital number, since it uses as much as digits as its factorization.

13089855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872665.

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 13089855 is about 3617.9904643324. The cubic root of 13089855 is about 235.6739668675.

The spelling of 13089855 in words is "thirteen million, eighty-nine thousand, eight hundred fifty-five".