1439223144 has 64 divisors (see below), whose sum is σ = 3667991040. Its totient is φ = 470507520.

The previous prime is 1439223139. The next prime is 1439223169. The reversal of 1439223144 is 4413229341.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260329 + ... + 265799.

It is an arithmetic number, because the mean of its divisors is an integer number (57312360).

Almost surely, 2^1439223144 is an apocalyptic number.

It is an amenable number.

1439223144 is an abundant number, since it is smaller than the sum of its proper divisors (2228767896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1439223144 is a wasteful number, since it uses less digits than its factorization.

1439223144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5690 (or 5686 counting only the distinct ones).

The product of its digits is 20736, while the sum is 33.

The square root of 1439223144 is about 37937.0945645552. The cubic root of 1439223144 is about 1129.0401288273.

The spelling of 1439223144 in words is "one billion, four hundred thirty-nine million, two hundred twenty-three thousand, one hundred forty-four".