117938906 has 16 divisors (see below), whose sum is σ = 182073960. Its totient is φ = 57254400.

The previous prime is 117938903. The next prime is 117938921. The reversal of 117938906 is 609839711.

It can be written as a sum of positive squares in 4 ways, for example, as 104550625 + 13388281 = 10225^2 + 3659^2 .

It is not an unprimeable number, because it can be changed into a prime (117938903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40706 + ... + 43506.

Almost surely, 2^117938906 is an apocalyptic number.

117938906 is a deficient number, since it is larger than the sum of its proper divisors (64135054).

117938906 is a wasteful number, since it uses less digits than its factorization.

117938906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3409.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 117938906 is about 10859.9680478351. The cubic root of 117938906 is about 490.4021493829.

The spelling of 117938906 in words is "one hundred seventeen million, nine hundred thirty-eight thousand, nine hundred six".