1440002401 has 2 divisors, whose sum is σ = 1440002402. Its totient is φ = 1440002400.

The previous prime is 1440002387. The next prime is 1440002437. The reversal of 1440002401 is 1042000441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 956046400 + 483956001 = 30920^2 + 21999^2 .

It is a cyclic number.

It is not a de Polignac number, because 1440002401 - 2⁹ = 1440001889 is a prime.

It is not a weakly prime, because it can be changed into another prime (1440002471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720001200 + 720001201.

It is an arithmetic number, because the mean of its divisors is an integer number (720001201).

Almost surely, 2^1440002401 is an apocalyptic number.

It is an amenable number.

1440002401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440002401 is an equidigital number, since it uses as much as digits as its factorization.

1440002401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1440002401 is about 37947.3635579601. The cubic root of 1440002401 is about 1129.2438622756.

Adding to 1440002401 its reverse (1042000441), we get a palindrome (2482002842).

The spelling of 1440002401 in words is "one billion, four hundred forty million, two thousand, four hundred one".