117817844 has 24 divisors (see below), whose sum is σ = 209812680. Its totient is φ = 57880064.

The previous prime is 117817831. The next prime is 117817853. The reversal of 117817844 is 448718711.

It can be written as a sum of positive squares in 4 ways, for example, as 46076944 + 71740900 = 6788^2 + 8470^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 60632 + ... + 62544.

It is an arithmetic number, because the mean of its divisors is an integer number (8742195).

Almost surely, 2^117817844 is an apocalyptic number.

It is an amenable number.

117817844 is a deficient number, since it is larger than the sum of its proper divisors (91994836).

117817844 is a wasteful number, since it uses less digits than its factorization.

117817844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179 (or 2177 counting only the distinct ones).

The product of its digits is 50176, while the sum is 41.

The square root of 117817844 is about 10854.3928434528. The cubic root of 117817844 is about 490.2342958381.

The spelling of 117817844 in words is "one hundred seventeen million, eight hundred seventeen thousand, eight hundred forty-four".