2044020401 has 2 divisors, whose sum is σ = 2044020402. Its totient is φ = 2044020400.

The previous prime is 2044020359. The next prime is 2044020403. The reversal of 2044020401 is 1040204402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1660644001 + 383376400 = 40751^2 + 19580^2 .

It is a cyclic number.

It is not a de Polignac number, because 2044020401 - 2²⁶ = 1976911537 is a prime.

Together with 2044020403, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2044020401.

It is not a weakly prime, because it can be changed into another prime (2044020403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022010200 + 1022010201.

It is an arithmetic number, because the mean of its divisors is an integer number (1022010201).

Almost surely, 2^2044020401 is an apocalyptic number.

It is an amenable number.

2044020401 is a deficient number, since it is larger than the sum of its proper divisors (1).

2044020401 is an equidigital number, since it uses as much as digits as its factorization.

2044020401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2044020401 is about 45210.8438430428. The cubic root of 2044020401 is about 1269.0977535721.

Adding to 2044020401 its reverse (1040204402), we get a palindrome (3084224803).

The spelling of 2044020401 in words is "two billion, forty-four million, twenty thousand, four hundred one".