91798226 has 16 divisors (see below), whose sum is σ = 151089624. Its totient is φ = 41568384.

The previous prime is 91798199. The next prime is 91798247. The reversal of 91798226 is 62289719.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 39250225 + 52548001 = 6265^2 + 7249^2 .

It is a Curzon number.

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, 31931 + ... + 34686.

Almost surely, 2^91798226 is an apocalyptic number.

91798226 is a deficient number, since it is larger than the sum of its proper divisors (59291398).

91798226 is a wasteful number, since it uses less digits than its factorization.

91798226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66685.

The product of its digits is 108864, while the sum is 44.

The square root of 91798226 is about 9581.1390763312. The cubic root of 91798226 is about 451.1054730103.

The spelling of 91798226 in words is "ninety-one million, seven hundred ninety-eight thousand, two hundred twenty-six".