91473922 has 8 divisors (see below), whose sum is σ = 137349900. Its totient is φ = 45690624.

The previous prime is 91473913. The next prime is 91473929. The reversal of 91473922 is 22937419.

It can be written as a sum of positive squares in 2 ways, for example, as 91183401 + 290521 = 9549^2 + 539^2 .

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

It is not an unprimeable number, because it can be changed into a prime (91473929) 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 3 ways as a sum of consecutive naturals, for example, 20647 + ... + 24682.

Almost surely, 2^91473922 is an apocalyptic number.

91473922 is a deficient number, since it is larger than the sum of its proper divisors (45875978).

91473922 is a wasteful number, since it uses less digits than its factorization.

91473922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46340.

The product of its digits is 27216, while the sum is 37.

The square root of 91473922 is about 9564.2000188202. The cubic root of 91473922 is about 450.5736256767.

The spelling of 91473922 in words is "ninety-one million, four hundred seventy-three thousand, nine hundred twenty-two".