639084516329 has 8 divisors (see below), whose sum is σ = 753943024128. Its totient is φ = 530116188480.

The previous prime is 639084516247. The next prime is 639084516479. The reversal of 639084516329 is 923615480936.

It is a happy number.

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 639084516329 - 2¹⁶ = 639084450793 is a prime.

It is a super-3 number, since 3×639084516329³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (639084516929) 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, 1472544752 + ... + 1472545185.

It is an arithmetic number, because the mean of its divisors is an integer number (94242878016).

Almost surely, 2^639084516329 is an apocalyptic number.

It is an amenable number.

639084516329 is a deficient number, since it is larger than the sum of its proper divisors (114858507799).

639084516329 is a wasteful number, since it uses less digits than its factorization.

639084516329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945089975.

The product of its (nonzero) digits is 8398080, while the sum is 56.

The spelling of 639084516329 in words is "six hundred thirty-nine billion, eighty-four million, five hundred sixteen thousand, three hundred twenty-nine".