91441858 has 8 divisors (see below), whose sum is σ = 139487760. Its totient is φ = 44945940.

The previous prime is 91441853. The next prime is 91441873. The reversal of 91441858 is 85814419.

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

It is a super-2 number, since 2×91441858² = 16723226788984328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91441858.

It is not an unprimeable number, because it can be changed into a prime (91441853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387348 + ... + 387583.

It is an arithmetic number, because the mean of its divisors is an integer number (17435970).

Almost surely, 2^91441858 is an apocalyptic number.

91441858 is a deficient number, since it is larger than the sum of its proper divisors (48045902).

91441858 is a wasteful number, since it uses less digits than its factorization.

91441858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774992.

The product of its digits is 46080, while the sum is 40.

The square root of 91441858 is about 9562.5236208859. The cubic root of 91441858 is about 450.5209735809.

The spelling of 91441858 in words is "ninety-one million, four hundred forty-one thousand, eight hundred fifty-eight".