639592852 has 12 divisors (see below), whose sum is σ = 1121198400. Its totient is φ = 319250456.

The previous prime is 639592843. The next prime is 639592859. The reversal of 639592852 is 258295936.

It is a happy number.

639592852 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×639592852³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 639592796 and 639592805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (639592859) 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, 133852 + ... + 138547.

It is an arithmetic number, because the mean of its divisors is an integer number (93433200).

Almost surely, 2^639592852 is an apocalyptic number.

It is an amenable number.

639592852 is a deficient number, since it is larger than the sum of its proper divisors (481605548).

639592852 is a wasteful number, since it uses less digits than its factorization.

639592852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272990 (or 272988 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 49.

The square root of 639592852 is about 25290.1730322274. The cubic root of 639592852 is about 861.5910927104.

The spelling of 639592852 in words is "six hundred thirty-nine million, five hundred ninety-two thousand, eight hundred fifty-two".