1439218444 has 6 divisors (see below), whose sum is σ = 2518632284. Its totient is φ = 719609220.

The previous prime is 1439218439. The next prime is 1439218463. The reversal of 1439218444 is 4448129341.

It is a super-2 number, since 2×1439218444² = 4142699459099562272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1439218397 and 1439218406.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 179902302 + ... + 179902309.

Almost surely, 2^1439218444 is an apocalyptic number.

It is an amenable number.

1439218444 is a deficient number, since it is larger than the sum of its proper divisors (1079413840).

1439218444 is a wasteful number, since it uses less digits than its factorization.

1439218444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359804615 (or 359804613 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 1439218444 is about 37937.0326198558. The cubic root of 1439218444 is about 1129.0388998091.

The spelling of 1439218444 in words is "one billion, four hundred thirty-nine million, two hundred eighteen thousand, four hundred forty-four".