91492393 has 2 divisors, whose sum is σ = 91492394. Its totient is φ = 91492392.

The previous prime is 91492381. The next prime is 91492403. The reversal of 91492393 is 39329419.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89340304 + 2152089 = 9452^2 + 1467^2 .

It is a cyclic number.

It is not a de Polignac number, because 91492393 - 2¹⁷ = 91361321 is a prime.

It is not a weakly prime, because it can be changed into another prime (91492493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45746196 + 45746197.

It is an arithmetic number, because the mean of its divisors is an integer number (45746197).

Almost surely, 2^91492393 is an apocalyptic number.

It is an amenable number.

91492393 is a deficient number, since it is larger than the sum of its proper divisors (1).

91492393 is an equidigital number, since it uses as much as digits as its factorization.

91492393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488, while the sum is 40.

The square root of 91492393 is about 9565.1656023302. The cubic root of 91492393 is about 450.6039512060.

The spelling of 91492393 in words is "ninety-one million, four hundred ninety-two thousand, three hundred ninety-three".