91790448 has 20 divisors (see below), whose sum is σ = 237125448. Its totient is φ = 30596800.

The previous prime is 91790443. The next prime is 91790453. The reversal of 91790448 is 84409719.

It is an interprime number because it is at equal distance from previous prime (91790443) and next prime (91790453).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91790441) 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 in 3 ways as a sum of consecutive naturals, for example, 956103 + ... + 956198.

Almost surely, 2^91790448 is an apocalyptic number.

It is an amenable number.

91790448 is an abundant number, since it is smaller than the sum of its proper divisors (145335000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91790448 is a wasteful number, since it uses less digits than its factorization.

91790448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1912312 (or 1912306 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 91790448 is about 9580.7331660996. The cubic root of 91790448 is about 451.0927320325.

The spelling of 91790448 in words is "ninety-one million, seven hundred ninety thousand, four hundred forty-eight".