809427943506239 has 8 divisors (see below), whose sum is σ = 814864513773600. Its totient is φ = 803991428812000.

The previous prime is 809427943506229. The next prime is 809427943506241. The reversal of 809427943506239 is 932605349724908.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 809427943506239 - 2²⁰ = 809427942457663 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 (809427943506229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15543494 + ... + 43133004.

It is an arithmetic number, because the mean of its divisors is an integer number (101858064221700).

Almost surely, 2^{809427943506239} is an apocalyptic number.

809427943506239 is a deficient number, since it is larger than the sum of its proper divisors (5436570267361).

809427943506239 is a wasteful number, since it uses less digits than its factorization.

809427943506239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27786561.

The product of its (nonzero) digits is 705438720, while the sum is 71.

The spelling of 809427943506239 in words is "eight hundred nine trillion, four hundred twenty-seven billion, nine hundred forty-three million, five hundred six thousand, two hundred thirty-nine".