13947855 has 16 divisors (see below), whose sum is σ = 22377600. Its totient is φ = 7418528.

The previous prime is 13947847. The next prime is 13947863. The reversal of 13947855 is 55874931.

It is an interprime number because it is at equal distance from previous prime (13947847) and next prime (13947863).

It is a cyclic number.

It is not a de Polignac number, because 13947855 - 2³ = 13947847 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5596 + ... + 7694.

It is an arithmetic number, because the mean of its divisors is an integer number (1398600).

Almost surely, 2^13947855 is an apocalyptic number.

13947855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13947855 is a deficient number, since it is larger than the sum of its proper divisors (8429745).

13947855 is a wasteful number, since it uses less digits than its factorization.

13947855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2550.

The product of its digits is 151200, while the sum is 42.

The square root of 13947855 is about 3734.6827174474. The cubic root of 13947855 is about 240.7146234988.

The spelling of 13947855 in words is "thirteen million, nine hundred forty-seven thousand, eight hundred fifty-five".