2044400401 has 2 divisors, whose sum is σ = 2044400402. Its totient is φ = 2044400400.

The previous prime is 2044400387. The next prime is 2044400417. The reversal of 2044400401 is 1040044402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1987019776 + 57380625 = 44576^2 + 7575^2 .

It is a cyclic number.

It is not a de Polignac number, because 2044400401 - 2⁷ = 2044400273 is a prime.

It is not a weakly prime, because it can be changed into another prime (2044400461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022200200 + 1022200201.

It is an arithmetic number, because the mean of its divisors is an integer number (1022200201).

Almost surely, 2^2044400401 is an apocalyptic number.

It is an amenable number.

2044400401 is a deficient number, since it is larger than the sum of its proper divisors (1).

2044400401 is an equidigital number, since it uses as much as digits as its factorization.

2044400401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 2044400401 is about 45215.0461793417. The cubic root of 2044400401 is about 1269.1763938936.

Adding to 2044400401 its reverse (1040044402), we get a palindrome (3084444803).

The spelling of 2044400401 in words is "two billion, forty-four million, four hundred thousand, four hundred one".