91272797 has 8 divisors (see below), whose sum is σ = 113794752. Its totient is φ = 71121600.

The previous prime is 91272767. The next prime is 91272799. The reversal of 91272797 is 79727219.

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

It is not a de Polignac number, because 91272797 - 2⁶ = 91272733 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 (91272799) 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, 592604 + ... + 592757.

It is an arithmetic number, because the mean of its divisors is an integer number (14224344).

Almost surely, 2^91272797 is an apocalyptic number.

It is an amenable number.

91272797 is a deficient number, since it is larger than the sum of its proper divisors (22521955).

91272797 is a wasteful number, since it uses less digits than its factorization.

91272797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185379.

The product of its digits is 111132, while the sum is 44.

The square root of 91272797 is about 9553.6797622696. The cubic root of 91272797 is about 450.2431558308.

The spelling of 91272797 in words is "ninety-one million, two hundred seventy-two thousand, seven hundred ninety-seven".