439139156 has 6 divisors (see below), whose sum is σ = 768493530. Its totient is φ = 219569576.

The previous prime is 439139147. The next prime is 439139159. The reversal of 439139156 is 651931934.

It can be written as a sum of positive squares in only one way, i.e., 420906256 + 18232900 = 20516^2 + 4270^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439139159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54892391 + ... + 54892398.

It is an arithmetic number, because the mean of its divisors is an integer number (128082255).

Almost surely, 2^439139156 is an apocalyptic number.

It is an amenable number.

439139156 is a deficient number, since it is larger than the sum of its proper divisors (329354374).

439139156 is a wasteful number, since it uses less digits than its factorization.

439139156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109784793 (or 109784791 counting only the distinct ones).

The product of its digits is 87480, while the sum is 41.

The square root of 439139156 is about 20955.6473533986. The cubic root of 439139156 is about 760.0941457702.

The spelling of 439139156 in words is "four hundred thirty-nine million, one hundred thirty-nine thousand, one hundred fifty-six".