91307994 has 8 divisors (see below), whose sum is σ = 182616000. Its totient is φ = 30435996.

The previous prime is 91307947. The next prime is 91308001. The reversal of 91307994 is 49970319.

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

91307994 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7608994 + ... + 7609005.

It is an arithmetic number, because the mean of its divisors is an integer number (22827000).

Almost surely, 2^91307994 is an apocalyptic number.

91307994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

91307994 is a wasteful number, since it uses less digits than its factorization.

91307994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15218004.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 91307994 is about 9555.5216498106. The cubic root of 91307994 is about 450.3010232798.

The spelling of 91307994 in words is "ninety-one million, three hundred seven thousand, nine hundred ninety-four".