91159922 has 16 divisors (see below), whose sum is σ = 156427200. Its totient is φ = 39030288.

The previous prime is 91159919. The next prime is 91159949. The reversal of 91159922 is 22995119.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15329 + ... + 20427.

It is an arithmetic number, because the mean of its divisors is an integer number (9776700).

Almost surely, 2^91159922 is an apocalyptic number.

91159922 is a deficient number, since it is larger than the sum of its proper divisors (65267278).

91159922 is a wasteful number, since it uses less digits than its factorization.

91159922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6385.

The product of its digits is 14580, while the sum is 38.

The square root of 91159922 is about 9547.7705251017. The cubic root of 91159922 is about 450.0574774319.

The spelling of 91159922 in words is "ninety-one million, one hundred fifty-nine thousand, nine hundred twenty-two".