117909898 has 8 divisors (see below), whose sum is σ = 181645092. Its totient is φ = 57361536.

The previous prime is 117909893. The next prime is 117909899. The reversal of 117909898 is 898909711.

It can be written as a sum of positive squares in 2 ways, for example, as 115197289 + 2712609 = 10733^2 + 1647^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (117909893) 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, 796615 + ... + 796762.

Almost surely, 2^117909898 is an apocalyptic number.

117909898 is a deficient number, since it is larger than the sum of its proper divisors (63735194).

117909898 is a wasteful number, since it uses less digits than its factorization.

117909898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593416.

The product of its (nonzero) digits is 326592, while the sum is 52.

The square root of 117909898 is about 10858.6324184954. The cubic root of 117909898 is about 490.3619399997.

The spelling of 117909898 in words is "one hundred seventeen million, nine hundred nine thousand, eight hundred ninety-eight".