1444391361 has 24 divisors (see below), whose sum is σ = 2390722880. Its totient is φ = 823175136.

The previous prime is 1444391353. The next prime is 1444391363. The reversal of 1444391361 is 1631934441.

It is not a de Polignac number, because 1444391361 - 2³ = 1444391353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1444391363) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6370 + ... + 54123.

Almost surely, 2^1444391361 is an apocalyptic number.

It is an amenable number.

1444391361 is a deficient number, since it is larger than the sum of its proper divisors (946331519).

1444391361 is a wasteful number, since it uses less digits than its factorization.

1444391361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60885 (or 60882 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 1444391361 is about 38005.1491379787. The cubic root of 1444391361 is about 1130.3899666927.

The spelling of 1444391361 in words is "one billion, four hundred forty-four million, three hundred ninety-one thousand, three hundred sixty-one".