90845841 has 32 divisors (see below), whose sum is σ = 136055808. Its totient is φ = 53637120.

The previous prime is 90845827. The next prime is 90845927. The reversal of 90845841 is 14854809.

It is not a de Polignac number, because 90845841 - 2⁵ = 90845809 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 90845841.

It is not an unprimeable number, because it can be changed into a prime (90845141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57721 + ... + 59273.

It is an arithmetic number, because the mean of its divisors is an integer number (4251744).

Almost surely, 2^90845841 is an apocalyptic number.

It is an amenable number.

90845841 is a deficient number, since it is larger than the sum of its proper divisors (45209967).

90845841 is a wasteful number, since it uses less digits than its factorization.

90845841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 90845841 is about 9531.3084621158. The cubic root of 90845841 is about 449.5400089687.

The spelling of 90845841 in words is "ninety million, eight hundred forty-five thousand, eight hundred forty-one".