117961994 has 32 divisors (see below), whose sum is σ = 195022080. Its totient is φ = 53307072.

The previous prime is 117961993. The next prime is 117961999. The reversal of 117961994 is 499169711.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (117961993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73727 + ... + 75309.

It is an arithmetic number, because the mean of its divisors is an integer number (6094440).

Almost surely, 2^117961994 is an apocalyptic number.

117961994 is a deficient number, since it is larger than the sum of its proper divisors (77060086).

117961994 is a wasteful number, since it uses less digits than its factorization.

117961994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694.

The product of its digits is 122472, while the sum is 47.

The square root of 117961994 is about 10861.0309823700. The cubic root of 117961994 is about 490.4341480576.

The spelling of 117961994 in words is "one hundred seventeen million, nine hundred sixty-one thousand, nine hundred ninety-four".