1444400312 has 16 divisors (see below), whose sum is σ = 2734545840. Its totient is φ = 715188096.

The previous prime is 1444400281. The next prime is 1444400317. The reversal of 1444400312 is 2130044441.

It is a happy number.

It is a super-2 number, since 2×1444400312² = 4172584522611394688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444400317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 875633 + ... + 877280.

It is an arithmetic number, because the mean of its divisors is an integer number (170909115).

Almost surely, 2^1444400312 is an apocalyptic number.

It is an amenable number.

1444400312 is a deficient number, since it is larger than the sum of its proper divisors (1290145528).

1444400312 is a wasteful number, since it uses less digits than its factorization.

1444400312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753022 (or 1753018 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1444400312 is about 38005.2668981551. The cubic root of 1444400312 is about 1130.3923017246.

Adding to 1444400312 its reverse (2130044441), we get a palindrome (3574444753).

The spelling of 1444400312 in words is "one billion, four hundred forty-four million, four hundred thousand, three hundred twelve".