91222494 has 16 divisors (see below), whose sum is σ = 199031040. Its totient is φ = 27643160.

The previous prime is 91222489. The next prime is 91222507. The reversal of 91222494 is 49422219.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 691014 + ... + 691145.

It is an arithmetic number, because the mean of its divisors is an integer number (12439440).

Almost surely, 2^91222494 is an apocalyptic number.

91222494 is an abundant number, since it is smaller than the sum of its proper divisors (107808546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91222494 is a wasteful number, since it uses less digits than its factorization.

91222494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382175.

The product of its digits is 10368, while the sum is 33.

The square root of 91222494 is about 9551.0467489171. The cubic root of 91222494 is about 450.1604267511.

The spelling of 91222494 in words is "ninety-one million, two hundred twenty-two thousand, four hundred ninety-four".