91950222 has 64 divisors (see below), whose sum is σ = 229178880. Its totient is φ = 23946624.

The previous prime is 91950191. The next prime is 91950223. The reversal of 91950222 is 22205919.

It is a self number, because there is not a number n which added to its sum of digits gives 91950222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91950223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44304 + ... + 46332.

It is an arithmetic number, because the mean of its divisors is an integer number (3580920).

Almost surely, 2^91950222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91950222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114589440).

91950222 is an abundant number, since it is smaller than the sum of its proper divisors (137228658).

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

91950222 is a wasteful number, since it uses less digits than its factorization.

91950222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 91950222 is about 9589.0678379079. The cubic root of 91950222 is about 451.3543101325.

The spelling of 91950222 in words is "ninety-one million, nine hundred fifty thousand, two hundred twenty-two".