91797122 has 8 divisors (see below), whose sum is σ = 142443900. Its totient is φ = 44315824.

The previous prime is 91797109. The next prime is 91797143. The reversal of 91797122 is 22179719.

It can be written as a sum of positive squares in 2 ways, for example, as 91565761 + 231361 = 9569^2 + 481^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 791297 + ... + 791412.

Almost surely, 2^91797122 is an apocalyptic number.

91797122 is a deficient number, since it is larger than the sum of its proper divisors (50646778).

91797122 is a wasteful number, since it uses less digits than its factorization.

91797122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582740.

The product of its digits is 15876, while the sum is 38.

The square root of 91797122 is about 9581.0814629665. The cubic root of 91797122 is about 451.1036646150.

It can be divided in two parts, 91797 and 122, that added together give a palindrome (91919).

The spelling of 91797122 in words is "ninety-one million, seven hundred ninety-seven thousand, one hundred twenty-two".