1444769999 has 4 divisors (see below), whose sum is σ = 1445120064. Its totient is φ = 1444419936.

The previous prime is 1444769971. The next prime is 1444770017. The reversal of 1444769999 is 9999674441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9999674441 = 149 ⋅67111909.

It is a cyclic number.

It is not a de Polignac number, because 1444769999 - 2²⁰ = 1443721423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444769929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168767 + ... + 177120.

It is an arithmetic number, because the mean of its divisors is an integer number (361280016).

Almost surely, 2^1444769999 is an apocalyptic number.

1444769999 is a deficient number, since it is larger than the sum of its proper divisors (350065).

1444769999 is an equidigital number, since it uses as much as digits as its factorization.

1444769999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350064.

The product of its digits is 17635968, while the sum is 62.

The square root of 1444769999 is about 38010.1302155097. The cubic root of 1444769999 is about 1130.4887329074.

The spelling of 1444769999 in words is "one billion, four hundred forty-four million, seven hundred sixty-nine thousand, nine hundred ninety-nine".