13888855 has 4 divisors (see below), whose sum is σ = 16666632. Its totient is φ = 11111080.

The previous prime is 13888843. The next prime is 13888879. The reversal of 13888855 is 55888831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55888831 = 2243 ⋅24917.

It is not a de Polignac number, because 13888855 - 2²³ = 5500247 is a prime.

It is a super-2 number, since 2×13888855² = 385800586422050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1388881 + ... + 1388890.

It is an arithmetic number, because the mean of its divisors is an integer number (4166658).

Almost surely, 2^13888855 is an apocalyptic number.

13888855 is a deficient number, since it is larger than the sum of its proper divisors (2777777).

13888855 is an equidigital number, since it uses as much as digits as its factorization.

13888855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777776.

The product of its digits is 307200, while the sum is 46.

The square root of 13888855 is about 3726.7754158253. The cubic root of 13888855 is about 240.3747328795.

The spelling of 13888855 in words is "thirteen million, eight hundred eighty-eight thousand, eight hundred fifty-five".