91746493 has 2 divisors, whose sum is σ = 91746494. Its totient is φ = 91746492.

The previous prime is 91746449. The next prime is 91746511. The reversal of 91746493 is 39464719.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54804409 + 36942084 = 7403^2 + 6078^2 .

It is a cyclic number.

It is not a de Polignac number, because 91746493 - 2¹³ = 91738301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91746443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45873246 + 45873247.

It is an arithmetic number, because the mean of its divisors is an integer number (45873247).

Almost surely, 2^91746493 is an apocalyptic number.

It is an amenable number.

91746493 is a deficient number, since it is larger than the sum of its proper divisors (1).

91746493 is an equidigital number, since it uses as much as digits as its factorization.

91746493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 43.

The square root of 91746493 is about 9578.4389646748. The cubic root of 91746493 is about 451.0207167439.

The spelling of 91746493 in words is "ninety-one million, seven hundred forty-six thousand, four hundred ninety-three".