116421599 has 12 divisors (see below), whose sum is σ = 135808200. Its totient is φ = 99510768.

The previous prime is 116421587. The next prime is 116421601. The reversal of 116421599 is 995124611.

It is not a de Polignac number, because 116421599 - 2⁸ = 116421343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116420599) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15437 + ... + 21705.

It is an arithmetic number, because the mean of its divisors is an integer number (11317350).

Almost surely, 2^116421599 is an apocalyptic number.

116421599 is a deficient number, since it is larger than the sum of its proper divisors (19386601).

116421599 is an equidigital number, since it uses as much as digits as its factorization.

116421599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6662 (or 6655 counting only the distinct ones).

The product of its digits is 19440, while the sum is 38.

The square root of 116421599 is about 10789.8841050310. The cubic root of 116421599 is about 488.2900259663.

The spelling of 116421599 in words is "one hundred sixteen million, four hundred twenty-one thousand, five hundred ninety-nine".