439286384447 has 4 divisors (see below), whose sum is σ = 449502346920. Its totient is φ = 429070421976.

The previous prime is 439286384429. The next prime is 439286384473. The reversal of 439286384447 is 744483682934.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 439286384447 - 2⁸ = 439286384191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 439286384447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439286384417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5107981172 + ... + 5107981257.

It is an arithmetic number, because the mean of its divisors is an integer number (112375586730).

Almost surely, 2^439286384447 is an apocalyptic number.

439286384447 is a deficient number, since it is larger than the sum of its proper divisors (10215962473).

439286384447 is a wasteful number, since it uses less digits than its factorization.

439286384447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10215962472.

The product of its digits is 111476736, while the sum is 62.

The spelling of 439286384447 in words is "four hundred thirty-nine billion, two hundred eighty-six million, three hundred eighty-four thousand, four hundred forty-seven".