1444400001 has 24 divisors (see below), whose sum is σ = 2285506080. Its totient is φ = 871747200.

The previous prime is 1444399997. The next prime is 1444400011. The reversal of 1444400001 is 1000044441.

It is not a de Polignac number, because 1444400001 - 2² = 1444399997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1444400011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6411 + ... + 54128.

It is an arithmetic number, because the mean of its divisors is an integer number (95229420).

Almost surely, 2^1444400001 is an apocalyptic number.

1444400001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1444400001 is a deficient number, since it is larger than the sum of its proper divisors (841106079).

1444400001 is a wasteful number, since it uses less digits than its factorization.

1444400001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60797 (or 60794 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1444400001 is about 38005.2628066167. The cubic root of 1444400001 is about 1130.3922205947.

Adding to 1444400001 its reverse (1000044441), we get a palindrome (2444444442).

The spelling of 1444400001 in words is "one billion, four hundred forty-four million, four hundred thousand, one".