91749834 has 40 divisors (see below), whose sum is σ = 224281728. Its totient is φ = 27802440.

The previous prime is 91749817. The next prime is 91749857. The reversal of 91749834 is 43894719.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 91749834.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 23962 + ... + 27525.

Almost surely, 2^91749834 is an apocalyptic number.

91749834 is an abundant number, since it is smaller than the sum of its proper divisors (132531894).

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

91749834 is a wasteful number, since it uses less digits than its factorization.

91749834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51512 (or 51503 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 91749834 is about 9578.6133652006. The cubic root of 91749834 is about 451.0261914016.

The spelling of 91749834 in words is "ninety-one million, seven hundred forty-nine thousand, eight hundred thirty-four".