117228889 has 4 divisors (see below), whose sum is σ = 124124724. Its totient is φ = 110333056.

The previous prime is 117228883. The next prime is 117228901. The reversal of 117228889 is 988822711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 96825600 + 20403289 = 9840^2 + 4517^2 .

It is a cyclic number.

It is not a de Polignac number, because 117228889 - 2²⁵ = 83674457 is a prime.

It is a super-2 number, since 2×117228889² = 27485224832348642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117228883) 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, 3447892 + ... + 3447925.

It is an arithmetic number, because the mean of its divisors is an integer number (31031181).

Almost surely, 2^117228889 is an apocalyptic number.

It is an amenable number.

117228889 is a deficient number, since it is larger than the sum of its proper divisors (6895835).

117228889 is an equidigital number, since it uses as much as digits as its factorization.

117228889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6895834.

The product of its digits is 129024, while the sum is 46.

The square root of 117228889 is about 10827.2290545642. The cubic root of 117228889 is about 489.4160599051.

The spelling of 117228889 in words is "one hundred seventeen million, two hundred twenty-eight thousand, eight hundred eighty-nine".