13911117 has 32 divisors (see below), whose sum is σ = 21700224. Its totient is φ = 7833600.

The previous prime is 13911109. The next prime is 13911119. The reversal of 13911117 is 71111931.

13911117 is nontrivially palindromic in base 16.

It is not a de Polignac number, because 13911117 - 2³ = 13911109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13911119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76767 + ... + 76947.

It is an arithmetic number, because the mean of its divisors is an integer number (678132).

Almost surely, 2^13911117 is an apocalyptic number.

13911117 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13911117 is a deficient number, since it is larger than the sum of its proper divisors (7789107).

13911117 is a wasteful number, since it uses less digits than its factorization.

13911117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349.

The product of its digits is 189, while the sum is 24.

The square root of 13911117 is about 3729.7609842991. The cubic root of 13911117 is about 240.5030939706.

It can be divided in two parts, 139111 and 17, that added together give a triangular number (139128 = T₅₂₇).

The spelling of 13911117 in words is "thirteen million, nine hundred eleven thousand, one hundred seventeen".