13864155 has 16 divisors (see below), whose sum is σ = 22302240. Its totient is φ = 7354368.

The previous prime is 13864139. The next prime is 13864171. The reversal of 13864155 is 55146831.

It is an interprime number because it is at equal distance from previous prime (13864139) and next prime (13864171).

It is not a de Polignac number, because 13864155 - 2⁴ = 13864139 is a prime.

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, 501 + ... + 5289.

It is an arithmetic number, because the mean of its divisors is an integer number (1393890).

Almost surely, 2^13864155 is an apocalyptic number.

13864155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13864155 is a deficient number, since it is larger than the sum of its proper divisors (8438085).

13864155 is a wasteful number, since it uses less digits than its factorization.

13864155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4990.

The product of its digits is 14400, while the sum is 33.

The square root of 13864155 is about 3723.4600843839. The cubic root of 13864155 is about 240.2321538356.

The spelling of 13864155 in words is "thirteen million, eight hundred sixty-four thousand, one hundred fifty-five".