1444440401 has 16 divisors (see below), whose sum is σ = 1556444160. Its totient is φ = 1336401360.

The previous prime is 1444440397. The next prime is 1444440407. The reversal of 1444440401 is 1040444441.

It is a cyclic number.

It is not a de Polignac number, because 1444440401 - 2² = 1444440397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1444440407) 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 in 15 ways as a sum of consecutive naturals, for example, 139340 + ... + 149346.

It is an arithmetic number, because the mean of its divisors is an integer number (97277760).

Almost surely, 2^1444440401 is an apocalyptic number.

It is an amenable number.

1444440401 is a deficient number, since it is larger than the sum of its proper divisors (112003759).

1444440401 is a wasteful number, since it uses less digits than its factorization.

1444440401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10204.

The product of its (nonzero) digits is 4096, while the sum is 26.

The square root of 1444440401 is about 38005.7943082367. The cubic root of 1444440401 is about 1130.4027595544.

Adding to 1444440401 its reverse (1040444441), we get a palindrome (2484884842).

It can be divided in two parts, 14444 and 40401, that added together give a palindrome (54845).

The spelling of 1444440401 in words is "one billion, four hundred forty-four million, four hundred forty thousand, four hundred one".