6339852521 has 4 divisors (see below), whose sum is σ = 6342209412. Its totient is φ = 6337495632.

The previous prime is 6339852511. The next prime is 6339852557. The reversal of 6339852521 is 1252589336.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4313862400 + 2025990121 = 65680^2 + 45011^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6339852521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6339852511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1174406 + ... + 1179791.

It is an arithmetic number, because the mean of its divisors is an integer number (1585552353).

Almost surely, 2^6339852521 is an apocalyptic number.

It is an amenable number.

6339852521 is a deficient number, since it is larger than the sum of its proper divisors (2356891).

6339852521 is a wasteful number, since it uses less digits than its factorization.

6339852521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356890.

The product of its digits is 388800, while the sum is 44.

The square root of 6339852521 is about 79623.1908491490. The cubic root of 6339852521 is about 1850.8009700382.

The spelling of 6339852521 in words is "six billion, three hundred thirty-nine million, eight hundred fifty-two thousand, five hundred twenty-one".