1444408081 has 8 divisors (see below), whose sum is σ = 1485779904. Its totient is φ = 1403607120.

The previous prime is 1444408061. The next prime is 1444408093. The reversal of 1444408081 is 1808044441.

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 1444408081 - 2⁷ = 1444407953 is a prime.

It is a super-2 number, since 2×1444408081² = 4172629408916205122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1444408061) 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, 137581 + ... + 147706.

It is an arithmetic number, because the mean of its divisors is an integer number (185722488).

Almost surely, 2^1444408081 is an apocalyptic number.

It is an amenable number.

1444408081 is a deficient number, since it is larger than the sum of its proper divisors (41371823).

1444408081 is an equidigital number, since it uses as much as digits as its factorization.

1444408081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285431.

The product of its (nonzero) digits is 16384, while the sum is 34.

The square root of 1444408081 is about 38005.3691075353. The cubic root of 1444408081 is about 1130.3943284024.

The spelling of 1444408081 in words is "one billion, four hundred forty-four million, four hundred eight thousand, eighty-one".