91198022 has 8 divisors (see below), whose sum is σ = 140133672. Its totient is φ = 44486800.

The previous prime is 91198021. The next prime is 91198067. The reversal of 91198022 is 22089119.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 91198022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91198021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556004 + ... + 556167.

It is an arithmetic number, because the mean of its divisors is an integer number (17516709).

Almost surely, 2^91198022 is an apocalyptic number.

91198022 is a deficient number, since it is larger than the sum of its proper divisors (48935650).

91198022 is a wasteful number, since it uses less digits than its factorization.

91198022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112214.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 91198022 is about 9549.7655468603. The cubic root of 91198022 is about 450.1201687301.

The spelling of 91198022 in words is "ninety-one million, one hundred ninety-eight thousand, twenty-two".