117856377 has 40 divisors (see below), whose sum is σ = 183997440. Its totient is φ = 75085920.

The previous prime is 117856369. The next prime is 117856399. The reversal of 117856377 is 773658711.

117856377 is a `hidden beast` number, since 1 + 1 + 7 + 8 + 5 + 637 + 7 = 666.

It is not a de Polignac number, because 117856377 - 2³ = 117856369 is a prime.

It is a super-2 number, since 2×117856377² = 27780251199132258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117856337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 307528 + ... + 307910.

It is an arithmetic number, because the mean of its divisors is an integer number (4599936).

Almost surely, 2^117856377 is an apocalyptic number.

It is an amenable number.

117856377 is a deficient number, since it is larger than the sum of its proper divisors (66141063).

117856377 is a wasteful number, since it uses less digits than its factorization.

117856377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555 (or 546 counting only the distinct ones).

The product of its digits is 246960, while the sum is 45.

The square root of 117856377 is about 10856.1676939885. The cubic root of 117856377 is about 490.2877346565.

The spelling of 117856377 in words is "one hundred seventeen million, eight hundred fifty-six thousand, three hundred seventy-seven".