1444420999 has 8 divisors (see below), whose sum is σ = 1722539520. Its totient is φ = 1184245656.

The previous prime is 1444420993. The next prime is 1444421047. The reversal of 1444420999 is 9990244441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1444420999 - 2⁷ = 1444420871 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 (1444420993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4485619 + ... + 4485940.

It is an arithmetic number, because the mean of its divisors is an integer number (215317440).

Almost surely, 2^1444420999 is an apocalyptic number.

1444420999 is a deficient number, since it is larger than the sum of its proper divisors (278118521).

1444420999 is an equidigital number, since it uses as much as digits as its factorization.

1444420999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8971589.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 1444420999 is about 38005.5390568270. The cubic root of 1444420999 is about 1130.3976982696.

The spelling of 1444420999 in words is "one billion, four hundred forty-four million, four hundred twenty thousand, nine hundred ninety-nine".