91222234 has 4 divisors (see below), whose sum is σ = 136833354. Its totient is φ = 45611116.

The previous prime is 91222223. The next prime is 91222277. The reversal of 91222234 is 43222219.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 79299025 + 11923209 = 8905^2 + 3453^2 .

It is a junction number, because it is equal to n+sod(n) for n = 91222199 and 91222208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22805557 + ... + 22805560.

Almost surely, 2^91222234 is an apocalyptic number.

91222234 is a deficient number, since it is larger than the sum of its proper divisors (45611120).

91222234 is a wasteful number, since it uses less digits than its factorization.

91222234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45611119.

The product of its digits is 1728, while the sum is 25.

The square root of 91222234 is about 9551.0331378338. The cubic root of 91222234 is about 450.1599990721.

The spelling of 91222234 in words is "ninety-one million, two hundred twenty-two thousand, two hundred thirty-four".