91122493 has 8 divisors (see below), whose sum is σ = 113607360. Its totient is φ = 71004480.

The previous prime is 91122487. The next prime is 91122517. The reversal of 91122493 is 39422119.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91122493 - 2⁹ = 91121981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91122413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 591628 + ... + 591781.

It is an arithmetic number, because the mean of its divisors is an integer number (14200920).

Almost surely, 2^91122493 is an apocalyptic number.

It is an amenable number.

91122493 is a deficient number, since it is larger than the sum of its proper divisors (22484867).

91122493 is a wasteful number, since it uses less digits than its factorization.

91122493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183427.

The product of its digits is 3888, while the sum is 31.

The square root of 91122493 is about 9545.8102327670. The cubic root of 91122493 is about 449.9958732132.

The spelling of 91122493 in words is "ninety-one million, one hundred twenty-two thousand, four hundred ninety-three".