91009794 has 16 divisors (see below), whose sum is σ = 182777760. Its totient is φ = 30210240.

The previous prime is 91009771. The next prime is 91009799. The reversal of 91009794 is 49790019.

It is not an unprimeable number, because it can be changed into a prime (91009799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30024 + ... + 32915.

It is an arithmetic number, because the mean of its divisors is an integer number (11423610).

Almost surely, 2^91009794 is an apocalyptic number.

91009794 is an abundant number, since it is smaller than the sum of its proper divisors (91767966).

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

91009794 is a wasteful number, since it uses less digits than its factorization.

91009794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63185.

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 91009794 is about 9539.9053454424. The cubic root of 91009794 is about 449.8102805196.

The spelling of 91009794 in words is "ninety-one million, nine thousand, seven hundred ninety-four".