91932493 has 2 divisors, whose sum is σ = 91932494. Its totient is φ = 91932492.

The previous prime is 91932479. The next prime is 91932497. The reversal of 91932493 is 39423919.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89170249 + 2762244 = 9443^2 + 1662^2 .

It is a cyclic number.

It is not a de Polignac number, because 91932493 - 2¹⁷ = 91801421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91932497) 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, 45966246 + 45966247.

It is an arithmetic number, because the mean of its divisors is an integer number (45966247).

Almost surely, 2^91932493 is an apocalyptic number.

It is an amenable number.

91932493 is a deficient number, since it is larger than the sum of its proper divisors (1).

91932493 is an equidigital number, since it uses as much as digits as its factorization.

91932493 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 91932493 is about 9588.1433552070. The cubic root of 91932493 is about 451.3252995992.

The spelling of 91932493 in words is "ninety-one million, nine hundred thirty-two thousand, four hundred ninety-three".