91312098 has 8 divisors (see below), whose sum is σ = 182624208. Its totient is φ = 30437364.

The previous prime is 91312087. The next prime is 91312099. The reversal of 91312098 is 89021319.

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

91312098 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (91312099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7609336 + ... + 7609347.

It is an arithmetic number, because the mean of its divisors is an integer number (22828026).

Almost surely, 2^91312098 is an apocalyptic number.

91312098 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.

91312098 is a wasteful number, since it uses less digits than its factorization.

91312098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15218688.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 91312098 is about 9555.7363923457. The cubic root of 91312098 is about 450.3077697052.

The spelling of 91312098 in words is "ninety-one million, three hundred twelve thousand, ninety-eight".