20044949 has 2 divisors, whose sum is σ = 20044950. Its totient is φ = 20044948.

The previous prime is 20044939. The next prime is 20044963. The reversal of 20044949 is 94944002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16144324 + 3900625 = 4018^2 + 1975^2 .

It is a cyclic number.

It is not a de Polignac number, because 20044949 - 2¹⁶ = 19979413 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20044909) 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 as a sum of consecutive naturals, namely, 10022474 + 10022475.

It is an arithmetic number, because the mean of its divisors is an integer number (10022475).

Almost surely, 2^20044949 is an apocalyptic number.

It is an amenable number.

20044949 is a deficient number, since it is larger than the sum of its proper divisors (1).

20044949 is an equidigital number, since it uses as much as digits as its factorization.

20044949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 20044949 is about 4477.1585855317. The cubic root of 20044949 is about 271.6449601051.

The spelling of 20044949 in words is "twenty million, forty-four thousand, nine hundred forty-nine".