90544291 has 18 divisors (see below), whose sum is σ = 99643740. Its totient is φ = 82045872.

The previous prime is 90544219. The next prime is 90544297. The reversal of 90544291 is 19244509.

It is not a de Polignac number, because 90544291 - 2⁹ = 90543779 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90544297) 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 17 ways as a sum of consecutive naturals, for example, 1534620 + ... + 1534678.

Almost surely, 2^90544291 is an apocalyptic number.

90544291 is a deficient number, since it is larger than the sum of its proper divisors (9099449).

90544291 is an equidigital number, since it uses as much as digits as its factorization.

90544291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 90544291 is about 9515.4763937493. The cubic root of 90544291 is about 449.0420626497.

The spelling of 90544291 in words is "ninety million, five hundred forty-four thousand, two hundred ninety-one".