439668491807807 has 4 divisors (see below), whose sum is σ = 462808938745080. Its totient is φ = 416528044870536.

The previous prime is 439668491807773. The next prime is 439668491807833. The reversal of 439668491807807 is 708708194866934.

It is a happy number.

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 439668491807807 - 2¹⁸ = 439668491545663 is a prime.

It is a super-3 number, since 3×439668491807807³ (a number of 45 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439668491807837) 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, 11570223468608 + ... + 11570223468645.

It is an arithmetic number, because the mean of its divisors is an integer number (115702234686270).

Almost surely, 2^{439668491807807} is an apocalyptic number.

439668491807807 is a deficient number, since it is larger than the sum of its proper divisors (23140446937273).

439668491807807 is a wasteful number, since it uses less digits than its factorization.

439668491807807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23140446937272.

The product of its (nonzero) digits is 3511517184, while the sum is 80.

The spelling of 439668491807807 in words is "four hundred thirty-nine trillion, six hundred sixty-eight billion, four hundred ninety-one million, eight hundred seven thousand, eight hundred seven".