91922113 has 2 divisors, whose sum is σ = 91922114. Its totient is φ = 91922112.

The previous prime is 91922107. The next prime is 91922167. The reversal of 91922113 is 31122919.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61968384 + 29953729 = 7872^2 + 5473^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91922113 is a prime.

It is not a weakly prime, because it can be changed into another prime (91922183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45961056 + 45961057.

It is an arithmetic number, because the mean of its divisors is an integer number (45961057).

Almost surely, 2^91922113 is an apocalyptic number.

It is an amenable number.

91922113 is a deficient number, since it is larger than the sum of its proper divisors (1).

91922113 is an equidigital number, since it uses as much as digits as its factorization.

91922113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 28.

The square root of 91922113 is about 9587.6020463930. The cubic root of 91922113 is about 451.3083127400.

It can be divided in two parts, 919 and 22113, that added together give a palindrome (23032).

The spelling of 91922113 in words is "ninety-one million, nine hundred twenty-two thousand, one hundred thirteen".