1444607999 has 4 divisors (see below), whose sum is σ = 1444844064. Its totient is φ = 1444371936.

The previous prime is 1444607987. The next prime is 1444608007. The reversal of 1444607999 is 9997064441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1444607999 - 2¹² = 1444603903 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1444607999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444607959) 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, 108602 + ... + 121175.

It is an arithmetic number, because the mean of its divisors is an integer number (361211016).

Almost surely, 2^1444607999 is an apocalyptic number.

1444607999 is a deficient number, since it is larger than the sum of its proper divisors (236065).

1444607999 is an equidigital number, since it uses as much as digits as its factorization.

1444607999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236064.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The square root of 1444607999 is about 38007.9991449168. Note that the first 3 decimals coincide. The cubic root of 1444607999 is about 1130.4464779648.

The spelling of 1444607999 in words is "one billion, four hundred forty-four million, six hundred seven thousand, nine hundred ninety-nine".