20090441 has 6 divisors (see below), whose sum is σ = 23370570. Its totient is φ = 17220336.

The previous prime is 20090437. The next prime is 20090471. The reversal of 20090441 is 14409002.

It can be written as a sum of positive squares in only one way, i.e., 19324816 + 765625 = 4396^2 + 875^2 .

It is not a de Polignac number, because 20090441 - 2² = 20090437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20090401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 204956 + ... + 205053.

It is an arithmetic number, because the mean of its divisors is an integer number (3895095).

Almost surely, 2^20090441 is an apocalyptic number.

It is an amenable number.

20090441 is a deficient number, since it is larger than the sum of its proper divisors (3280129).

20090441 is an equidigital number, since it uses as much as digits as its factorization.

20090441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410023 (or 410016 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 20090441 is about 4482.2361606680. The cubic root of 20090441 is about 271.8503041998.

Adding to 20090441 its reverse (14409002), we get a palindrome (34499443).

The spelling of 20090441 in words is "twenty million, ninety thousand, four hundred forty-one".