91000842 has 32 divisors (see below), whose sum is σ = 194296320. Its totient is φ = 28329840.

The previous prime is 91000831. The next prime is 91000843. The reversal of 91000842 is 24800019.

It is not an unprimeable number, because it can be changed into a prime (91000843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2473 + ... + 13715.

It is an arithmetic number, because the mean of its divisors is an integer number (6071760).

Almost surely, 2^91000842 is an apocalyptic number.

91000842 is an abundant number, since it is smaller than the sum of its proper divisors (103295478).

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

91000842 is a wasteful number, since it uses less digits than its factorization.

91000842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11338.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 91000842 is about 9539.4361468590. The cubic root of 91000842 is about 449.7955318004.

The spelling of 91000842 in words is "ninety-one million, eight hundred forty-two", and thus it is an aban number.