859438224809 has 4 divisors (see below), whose sum is σ = 870317189760. Its totient is φ = 848559259860.

The previous prime is 859438224767. The next prime is 859438224829. The reversal of 859438224809 is 908422834958.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 859438224809 - 2⁸ = 859438224553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (859438224829) 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, 5439482357 + ... + 5439482514.

It is an arithmetic number, because the mean of its divisors is an integer number (217579297440).

Almost surely, 2^859438224809 is an apocalyptic number.

It is an amenable number.

859438224809 is a deficient number, since it is larger than the sum of its proper divisors (10878964951).

859438224809 is a wasteful number, since it uses less digits than its factorization.

859438224809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10878964950.

The product of its (nonzero) digits is 39813120, while the sum is 62.

The spelling of 859438224809 in words is "eight hundred fifty-nine billion, four hundred thirty-eight million, two hundred twenty-four thousand, eight hundred nine".