117970845 has 32 divisors (see below), whose sum is σ = 193622400. Its totient is φ = 61311744.

The previous prime is 117970819. The next prime is 117970849. The reversal of 117970845 is 548079711.

It is not a de Polignac number, because 117970845 - 2⁶ = 117970781 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 117970797 and 117970806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117970849) 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 31 ways as a sum of consecutive naturals, for example, 141891 + ... + 142719.

It is an arithmetic number, because the mean of its divisors is an integer number (6050700).

Almost surely, 2^117970845 is an apocalyptic number.

117970845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117970845 is a deficient number, since it is larger than the sum of its proper divisors (75651555).

117970845 is a wasteful number, since it uses less digits than its factorization.

117970845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069.

The product of its (nonzero) digits is 70560, while the sum is 42.

The square root of 117970845 is about 10861.4384406486. The cubic root of 117970845 is about 490.4464139407.

The spelling of 117970845 in words is "one hundred seventeen million, nine hundred seventy thousand, eight hundred forty-five".