439439061604 has 9 divisors (see below), whose sum is σ = 769020677971. Its totient is φ = 219718867900.

The previous prime is 439439061601. The next prime is 439439061647. The reversal of 439439061604 is 406160934934.

It is a happy number.

The square root of 439439061604 is 662902.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (439439061601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1160079 + ... + 1491529.

Almost surely, 2^439439061604 is an apocalyptic number.

439439061604 is the 662902-nd square number.

It is an amenable number.

439439061604 is a deficient number, since it is larger than the sum of its proper divisors (329581616367).

439439061604 is an frugal number, since it uses more digits than its factorization.

439439061604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662906 (or 331453 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 49.

Multiplying 439439061604 by its sum of digits (49), we get a square (21532514018596 = 4640314²).

The spelling of 439439061604 in words is "four hundred thirty-nine billion, four hundred thirty-nine million, sixty-one thousand, six hundred four".