117840789 has 12 divisors (see below), whose sum is σ = 185688672. Its totient is φ = 71418600.

The previous prime is 117840781. The next prime is 117840803. The reversal of 117840789 is 987048711.

It is not a de Polignac number, because 117840789 - 2³ = 117840781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117840781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 595057 + ... + 595254.

It is an arithmetic number, because the mean of its divisors is an integer number (15474056).

Almost surely, 2^117840789 is an apocalyptic number.

It is an amenable number.

117840789 is a deficient number, since it is larger than the sum of its proper divisors (67847883).

117840789 is a wasteful number, since it uses less digits than its factorization.

117840789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190328 (or 1190325 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 45.

The square root of 117840789 is about 10855.4497373439. The cubic root of 117840789 is about 490.2661181139.

The spelling of 117840789 in words is "one hundred seventeen million, eight hundred forty thousand, seven hundred eighty-nine".