116645889 has 4 divisors (see below), whose sum is σ = 155527856. Its totient is φ = 77763924.

The previous prime is 116645873. The next prime is 116645899. The reversal of 116645889 is 988546611.

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 not a de Polignac number, because 116645889 - 2⁴ = 116645873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116645849) 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, 19440979 + ... + 19440984.

It is an arithmetic number, because the mean of its divisors is an integer number (38881964).

Almost surely, 2^116645889 is an apocalyptic number.

It is an amenable number.

116645889 is a deficient number, since it is larger than the sum of its proper divisors (38881967).

116645889 is an equidigital number, since it uses as much as digits as its factorization.

116645889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38881966.

The product of its digits is 414720, while the sum is 48.

The square root of 116645889 is about 10800.2726354477. The cubic root of 116645889 is about 488.6033936910.

The spelling of 116645889 in words is "one hundred sixteen million, six hundred forty-five thousand, eight hundred eighty-nine".