117455391 has 12 divisors (see below), whose sum is σ = 169784160. Its totient is φ = 78245280.

The previous prime is 117455389. The next prime is 117455399. The reversal of 117455391 is 193554711.

It is a happy number.

117455391 is a `hidden beast` number, since 1 + 17 + 4 + 553 + 91 = 666.

It is not a de Polignac number, because 117455391 - 2¹ = 117455389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117455399) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10426 + ... + 18536.

It is an arithmetic number, because the mean of its divisors is an integer number (14148680).

Almost surely, 2^117455391 is an apocalyptic number.

117455391 is a deficient number, since it is larger than the sum of its proper divisors (52328769).

117455391 is a wasteful number, since it uses less digits than its factorization.

117455391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9726 (or 9723 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 117455391 is about 10837.6838392712. The cubic root of 117455391 is about 489.7310630274.

It can be divided in two parts, 1174 and 55391, that added together give a palindrome (56565).

The spelling of 117455391 in words is "one hundred seventeen million, four hundred fifty-five thousand, three hundred ninety-one".