116831989 has 8 divisors (see below), whose sum is σ = 122094720. Its totient is φ = 111685056.

The previous prime is 116831983. The next prime is 116832011. The reversal of 116831989 is 989138611.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 116831989 - 2⁷ = 116831861 is a prime.

It is a super-2 number, since 2×116831989² = 27299427307392242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116831983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26884 + ... + 30925.

It is an arithmetic number, because the mean of its divisors is an integer number (15261840).

Almost surely, 2^116831989 is an apocalyptic number.

It is an amenable number.

116831989 is a deficient number, since it is larger than the sum of its proper divisors (5262731).

116831989 is an equidigital number, since it uses as much as digits as its factorization.

116831989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57899.

The product of its digits is 93312, while the sum is 46.

The square root of 116831989 is about 10808.8847250769. The cubic root of 116831989 is about 488.8630993072.

The spelling of 116831989 in words is "one hundred sixteen million, eight hundred thirty-one thousand, nine hundred eighty-nine".