90825844 has 12 divisors (see below), whose sum is σ = 159102468. Its totient is φ = 45368000.

The previous prime is 90825817. The next prime is 90825851. The reversal of 90825844 is 44852809.

It can be written as a sum of positive squares in 2 ways, for example, as 38812900 + 52012944 = 6230^2 + 7212^2 .

It is a junction number, because it is equal to n+sod(n) for n = 90825797 and 90825806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6457 + ... + 14944.

It is an arithmetic number, because the mean of its divisors is an integer number (13258539).

Almost surely, 2^90825844 is an apocalyptic number.

It is an amenable number.

90825844 is a deficient number, since it is larger than the sum of its proper divisors (68276624).

90825844 is a wasteful number, since it uses less digits than its factorization.

90825844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22466 (or 22464 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 90825844 is about 9530.2593878656. The cubic root of 90825844 is about 449.5070222771.

The spelling of 90825844 in words is "ninety million, eight hundred twenty-five thousand, eight hundred forty-four".