522399399859 has 4 divisors (see below), whose sum is σ = 528693368616. Its totient is φ = 516105431104.

The previous prime is 522399399839. The next prime is 522399399869. The reversal of 522399399859 is 958993993225.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-522399399859 is a prime.

It is a super-2 number, since 2×522399399859² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 522399399791 and 522399399800.

It is not an unprimeable number, because it can be changed into a prime (522399399839) 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, 3146984254 + ... + 3146984419.

It is an arithmetic number, because the mean of its divisors is an integer number (132173342154).

Almost surely, 2^522399399859 is an apocalyptic number.

522399399859 is a deficient number, since it is larger than the sum of its proper divisors (6293968757).

522399399859 is an equidigital number, since it uses as much as digits as its factorization.

522399399859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6293968756.

The product of its digits is 425152800, while the sum is 73.

The spelling of 522399399859 in words is "five hundred twenty-two billion, three hundred ninety-nine million, three hundred ninety-nine thousand, eight hundred fifty-nine".