91923697 has 2 divisors, whose sum is σ = 91923698. Its totient is φ = 91923696.

The previous prime is 91923683. The next prime is 91923701. The reversal of 91923697 is 79632919.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81432576 + 10491121 = 9024^2 + 3239^2 .

It is a cyclic number.

It is not a de Polignac number, because 91923697 - 2¹⁹ = 91399409 is a prime.

It is not a weakly prime, because it can be changed into another prime (91924697) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45961848 + 45961849.

It is an arithmetic number, because the mean of its divisors is an integer number (45961849).

Almost surely, 2^91923697 is an apocalyptic number.

It is an amenable number.

91923697 is a deficient number, since it is larger than the sum of its proper divisors (1).

91923697 is an equidigital number, since it uses as much as digits as its factorization.

91923697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 183708, while the sum is 46.

The square root of 91923697 is about 9587.6846527199. The cubic root of 91923697 is about 451.3109050371.

The spelling of 91923697 in words is "ninety-one million, nine hundred twenty-three thousand, six hundred ninety-seven".