116991029 has 2 divisors, whose sum is σ = 116991030. Its totient is φ = 116991028.

The previous prime is 116991019. The next prime is 116991067. The reversal of 116991029 is 920199611.

It is an a-pointer prime, because the next prime (116991067) can be obtained adding 116991029 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108638929 + 8352100 = 10423^2 + 2890^2 .

It is a cyclic number.

It is not a de Polignac number, because 116991029 - 2⁸ = 116990773 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 116990983 and 116991001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116991019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58495514 + 58495515.

It is an arithmetic number, because the mean of its divisors is an integer number (58495515).

Almost surely, 2^116991029 is an apocalyptic number.

It is an amenable number.

116991029 is a deficient number, since it is larger than the sum of its proper divisors (1).

116991029 is an equidigital number, since it uses as much as digits as its factorization.

116991029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 38.

The square root of 116991029 is about 10816.2391338210. The cubic root of 116991029 is about 489.0848237841.

The spelling of 116991029 in words is "one hundred sixteen million, nine hundred ninety-one thousand, twenty-nine".