917129113 has 2 divisors, whose sum is σ = 917129114. Its totient is φ = 917129112.

The previous prime is 917129063. The next prime is 917129177. The reversal of 917129113 is 311921719.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 795070809 + 122058304 = 28197^2 + 11048^2 .

It is a cyclic number.

It is not a de Polignac number, because 917129113 - 2⁹ = 917128601 is a prime.

It is a super-2 number, since 2×917129113² = 1682251619824333538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (917126113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 458564556 + 458564557.

It is an arithmetic number, because the mean of its divisors is an integer number (458564557).

Almost surely, 2^917129113 is an apocalyptic number.

It is an amenable number.

917129113 is a deficient number, since it is larger than the sum of its proper divisors (1).

917129113 is an equidigital number, since it uses as much as digits as its factorization.

917129113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3402, while the sum is 34.

The square root of 917129113 is about 30284.1396278646. The cubic root of 917129113 is about 971.5761080898.

The spelling of 917129113 in words is "nine hundred seventeen million, one hundred twenty-nine thousand, one hundred thirteen".