117719898 has 16 divisors (see below), whose sum is σ = 235828800. Its totient is φ = 39175136.

The previous prime is 117719869. The next prime is 117719909. The reversal of 117719898 is 898917711.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 117719898.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12198 + ... + 19601.

It is an arithmetic number, because the mean of its divisors is an integer number (14739300).

Almost surely, 2^117719898 is an apocalyptic number.

117719898 is an abundant number, since it is smaller than the sum of its proper divisors (118108902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117719898 is a wasteful number, since it uses less digits than its factorization.

117719898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32421.

The product of its digits is 254016, while the sum is 51.

The square root of 117719898 is about 10849.8800915033. The cubic root of 117719898 is about 490.0984086675.

The spelling of 117719898 in words is "one hundred seventeen million, seven hundred nineteen thousand, eight hundred ninety-eight".