117882977 has 4 divisors (see below), whose sum is σ = 117921300. Its totient is φ = 117844656.

The previous prime is 117882967. The next prime is 117883001. The reversal of 117882977 is 779288711.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64899136 + 52983841 = 8056^2 + 7279^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117882977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117882967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14102 + ... + 20847.

It is an arithmetic number, because the mean of its divisors is an integer number (29480325).

Almost surely, 2^117882977 is an apocalyptic number.

It is an amenable number.

117882977 is a deficient number, since it is larger than the sum of its proper divisors (38323).

117882977 is an equidigital number, since it uses as much as digits as its factorization.

117882977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38322.

The product of its digits is 395136, while the sum is 50.

The square root of 117882977 is about 10857.3927349065. The cubic root of 117882977 is about 490.3246176068.

The spelling of 117882977 in words is "one hundred seventeen million, eight hundred eighty-two thousand, nine hundred seventy-seven".