4394439738 has 72 divisors (see below), whose sum is σ = 10852807680. Its totient is φ = 1280953440.

The previous prime is 4394439733. The next prime is 4394439761. The reversal of 4394439738 is 8379344934.

It is a super-2 number, since 2×4394439738² = 38622201221827017288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4394439733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 19783 + ... + 95813.

It is an arithmetic number, because the mean of its divisors is an integer number (150733440).

Almost surely, 2^4394439738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4394439738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5426403840).

4394439738 is an abundant number, since it is smaller than the sum of its proper divisors (6458367942).

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

4394439738 is a wasteful number, since it uses less digits than its factorization.

4394439738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76084 (or 76068 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 54.

The square root of 4394439738 is about 66290.5705059174. The cubic root of 4394439738 is about 1637.9520016169.

The spelling of 4394439738 in words is "four billion, three hundred ninety-four million, four hundred thirty-nine thousand, seven hundred thirty-eight".