116989997 has 2 divisors, whose sum is σ = 116989998. Its totient is φ = 116989996.

The previous prime is 116989991. The next prime is 116990023. The reversal of 116989997 is 799989611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94984516 + 22005481 = 9746^2 + 4691^2 .

It is a cyclic number.

It is not a de Polignac number, because 116989997 - 2⁴ = 116989981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116989991) 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 as a sum of consecutive naturals, namely, 58494998 + 58494999.

It is an arithmetic number, because the mean of its divisors is an integer number (58494999).

Almost surely, 2^116989997 is an apocalyptic number.

It is an amenable number.

116989997 is a deficient number, since it is larger than the sum of its proper divisors (1).

116989997 is an equidigital number, since it uses as much as digits as its factorization.

116989997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2204496, while the sum is 59.

The square root of 116989997 is about 10816.1914276699. The cubic root of 116989997 is about 489.0833856766.

The spelling of 116989997 in words is "one hundred sixteen million, nine hundred eighty-nine thousand, nine hundred ninety-seven".