116639729 has 2 divisors, whose sum is σ = 116639730. Its totient is φ = 116639728.

The previous prime is 116639683. The next prime is 116639741. The reversal of 116639729 is 927936611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80013025 + 36626704 = 8945^2 + 6052^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116639729 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 116639729.

It is not a weakly prime, because it can be changed into another prime (116630729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58319864 + 58319865.

It is an arithmetic number, because the mean of its divisors is an integer number (58319865).

Almost surely, 2^116639729 is an apocalyptic number.

It is an amenable number.

116639729 is a deficient number, since it is larger than the sum of its proper divisors (1).

116639729 is an equidigital number, since it uses as much as digits as its factorization.

116639729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 44.

The square root of 116639729 is about 10799.9874536964. The cubic root of 116639729 is about 488.5947925880.

The spelling of 116639729 in words is "one hundred sixteen million, six hundred thirty-nine thousand, seven hundred twenty-nine".