91994622 has 16 divisors (see below), whose sum is σ = 185092992. Its totient is φ = 30480920.

The previous prime is 91994603. The next prime is 91994647. The reversal of 91994622 is 22649919.

It is a congruent 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, 44904 + ... + 46907.

It is an arithmetic number, because the mean of its divisors is an integer number (11568312).

Almost surely, 2^91994622 is an apocalyptic number.

91994622 is an abundant number, since it is smaller than the sum of its proper divisors (93098370).

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

91994622 is a wasteful number, since it uses less digits than its factorization.

91994622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91983.

The product of its digits is 69984, while the sum is 42.

The square root of 91994622 is about 9591.3826948986. The cubic root of 91994622 is about 451.4269469215.

The spelling of 91994622 in words is "ninety-one million, nine hundred ninety-four thousand, six hundred twenty-two".