91374293 has 2 divisors, whose sum is σ = 91374294. Its totient is φ = 91374292.

The previous prime is 91374271. The next prime is 91374317. The reversal of 91374293 is 39247319.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62837329 + 28536964 = 7927^2 + 5342^2 .

It is a cyclic number.

It is not a de Polignac number, because 91374293 - 2¹² = 91370197 is a prime.

It is a super-2 number, since 2×91374293² = 16698522842499698, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91374223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45687146 + 45687147.

It is an arithmetic number, because the mean of its divisors is an integer number (45687147).

Almost surely, 2^91374293 is an apocalyptic number.

It is an amenable number.

91374293 is a deficient number, since it is larger than the sum of its proper divisors (1).

91374293 is an equidigital number, since it uses as much as digits as its factorization.

91374293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 38.

The square root of 91374293 is about 9558.9901663303. The cubic root of 91374293 is about 450.4099852057.

The spelling of 91374293 in words is "ninety-one million, three hundred seventy-four thousand, two hundred ninety-three".