91293797 has 8 divisors (see below), whose sum is σ = 105508800. Its totient is φ = 77372064.

The previous prime is 91293793. The next prime is 91293817. The reversal of 91293797 is 79739219.

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

It is not a de Polignac number, because 91293797 - 2² = 91293793 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91293793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72647 + ... + 73892.

It is an arithmetic number, because the mean of its divisors is an integer number (13188600).

Almost surely, 2^91293797 is an apocalyptic number.

It is an amenable number.

91293797 is a deficient number, since it is larger than the sum of its proper divisors (14215003).

91293797 is a wasteful number, since it uses less digits than its factorization.

91293797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146635.

The product of its digits is 214326, while the sum is 47.

The square root of 91293797 is about 9554.7787520172. The cubic root of 91293797 is about 450.2776837571.

The spelling of 91293797 in words is "ninety-one million, two hundred ninety-three thousand, seven hundred ninety-seven".