1439863049 has 4 divisors (see below), whose sum is σ = 1441077264. Its totient is φ = 1438648836.

The previous prime is 1439863037. The next prime is 1439863057. The reversal of 1439863049 is 9403689341.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1439863049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1439862994 and 1439863012.

It is not an unprimeable number, because it can be changed into a prime (1439863099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 605327 + ... + 607700.

It is an arithmetic number, because the mean of its divisors is an integer number (360269316).

Almost surely, 2^1439863049 is an apocalyptic number.

It is an amenable number.

1439863049 is a deficient number, since it is larger than the sum of its proper divisors (1214215).

1439863049 is a wasteful number, since it uses less digits than its factorization.

1439863049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214214.

The product of its (nonzero) digits is 559872, while the sum is 47.

The square root of 1439863049 is about 37945.5273912486. The cubic root of 1439863049 is about 1129.2074346820.

The spelling of 1439863049 in words is "one billion, four hundred thirty-nine million, eight hundred sixty-three thousand, forty-nine".