117899689 has 4 divisors (see below), whose sum is σ = 119560320. Its totient is φ = 116239060.

The previous prime is 117899681. The next prime is 117899711. The reversal of 117899689 is 986998711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 117899689 - 2³ = 117899681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117899681) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 830209 + ... + 830350.

It is an arithmetic number, because the mean of its divisors is an integer number (29890080).

Almost surely, 2^117899689 is an apocalyptic number.

It is an amenable number.

117899689 is a deficient number, since it is larger than the sum of its proper divisors (1660631).

117899689 is an equidigital number, since it uses as much as digits as its factorization.

117899689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660630.

The product of its digits is 1959552, while the sum is 58.

The square root of 117899689 is about 10858.1623214981. The cubic root of 117899689 is about 490.3477872451.

The spelling of 117899689 in words is "one hundred seventeen million, eight hundred ninety-nine thousand, six hundred eighty-nine".