90020041 has 4 divisors (see below), whose sum is σ = 90069012. Its totient is φ = 89971072.

The previous prime is 90020039. The next prime is 90020069. The reversal of 90020041 is 14002009.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38180041 + 51840000 = 6179^2 + 7200^2 .

It is a cyclic number.

It is not a de Polignac number, because 90020041 - 2¹ = 90020039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90019997 and 90020024.

It is not an unprimeable number, because it can be changed into a prime (90020071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21616 + ... + 25441.

It is an arithmetic number, because the mean of its divisors is an integer number (22517253).

Almost surely, 2^90020041 is an apocalyptic number.

It is an amenable number.

90020041 is a deficient number, since it is larger than the sum of its proper divisors (48971).

90020041 is a wasteful number, since it uses less digits than its factorization.

90020041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48970.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 90020041 is about 9487.8891751538. The cubic root of 90020041 is about 448.1737358287.

The spelling of 90020041 in words is "ninety million, twenty thousand, forty-one".