13391855 has 8 divisors (see below), whose sum is σ = 16093392. Its totient is φ = 10698048.

The previous prime is 13391839. The next prime is 13391857. The reversal of 13391855 is 55819331.

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 13391855 - 2⁴ = 13391839 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13391857) 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, 3059 + ... + 6011.

It is an arithmetic number, because the mean of its divisors is an integer number (2011674).

Almost surely, 2^13391855 is an apocalyptic number.

13391855 is a deficient number, since it is larger than the sum of its proper divisors (2701537).

13391855 is an equidigital number, since it uses as much as digits as its factorization.

13391855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3865.

The product of its digits is 16200, while the sum is 35.

The square root of 13391855 is about 3659.4883522154. The cubic root of 13391855 is about 237.4726395074.

The spelling of 13391855 in words is "thirteen million, three hundred ninety-one thousand, eight hundred fifty-five".