91441859 has 8 divisors (see below), whose sum is σ = 96006912. Its totient is φ = 86925960.

The previous prime is 91441853. The next prime is 91441873. The reversal of 91441859 is 95814419.

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

It is a cyclic number.

It is not a de Polignac number, because 91441859 - 2¹⁶ = 91376323 is a prime.

It is a super-2 number, since 2×91441859² = 16723227154751762, which contains 22 as substring.

It is a Duffinian number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8447 + ... + 15944.

It is an arithmetic number, because the mean of its divisors is an integer number (12000864).

Almost surely, 2^91441859 is an apocalyptic number.

91441859 is a deficient number, since it is larger than the sum of its proper divisors (4565053).

91441859 is a wasteful number, since it uses less digits than its factorization.

91441859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24577.

The product of its digits is 51840, while the sum is 41.

The square root of 91441859 is about 9562.5236731733. The cubic root of 91441859 is about 450.5209752232.

The spelling of 91441859 in words is "ninety-one million, four hundred forty-one thousand, eight hundred fifty-nine".