439948691279 has 4 divisors (see below), whose sum is σ = 439965619560. Its totient is φ = 439931763000.

The previous prime is 439948691207. The next prime is 439948691297. The reversal of 439948691279 is 972196849934.

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 439948691279 - 2⁸ = 439948691023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439948691779) 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, 8425097 + ... + 8477154.

It is an arithmetic number, because the mean of its divisors is an integer number (109991404890).

Almost surely, 2^439948691279 is an apocalyptic number.

439948691279 is a deficient number, since it is larger than the sum of its proper divisors (16928281).

439948691279 is a wasteful number, since it uses less digits than its factorization.

439948691279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16928280.

The product of its digits is 211631616, while the sum is 71.

The spelling of 439948691279 in words is "four hundred thirty-nine billion, nine hundred forty-eight million, six hundred ninety-one thousand, two hundred seventy-nine".