117124989 has 4 divisors (see below), whose sum is σ = 156166656. Its totient is φ = 78083324.

The previous prime is 117124967. The next prime is 117125009. The reversal of 117124989 is 989421711.

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 117124989 - 2⁵ = 117124957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117124989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117124589) 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, 19520829 + ... + 19520834.

It is an arithmetic number, because the mean of its divisors is an integer number (39041664).

Almost surely, 2^117124989 is an apocalyptic number.

It is an amenable number.

117124989 is a deficient number, since it is larger than the sum of its proper divisors (39041667).

117124989 is an equidigital number, since it uses as much as digits as its factorization.

117124989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39041666.

The product of its digits is 36288, while the sum is 42.

The square root of 117124989 is about 10822.4299027529. The cubic root of 117124989 is about 489.2714272998.

The spelling of 117124989 in words is "one hundred seventeen million, one hundred twenty-four thousand, nine hundred eighty-nine".