117838889 has 4 divisors (see below), whose sum is σ = 134673024. Its totient is φ = 101004756.

The previous prime is 117838873. The next prime is 117838891. The reversal of 117838889 is 988838711.

It is a happy number.

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 117838889 - 2⁴ = 117838873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117838889.

It is not an unprimeable number, because it can be changed into a prime (117838859) 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, 8417057 + ... + 8417070.

It is an arithmetic number, because the mean of its divisors is an integer number (33668256).

Almost surely, 2^117838889 is an apocalyptic number.

It is an amenable number.

117838889 is a deficient number, since it is larger than the sum of its proper divisors (16834135).

117838889 is an equidigital number, since it uses as much as digits as its factorization.

117838889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16834134.

The product of its digits is 774144, while the sum is 53.

The square root of 117838889 is about 10855.3622233438. The cubic root of 117838889 is about 490.2634831728.

The spelling of 117838889 in words is "one hundred seventeen million, eight hundred thirty-eight thousand, eight hundred eighty-nine".