639086402429 has 8 divisors (see below), whose sum is σ = 666931780032. Its totient is φ = 611245942560.

The previous prime is 639086402411. The next prime is 639086402483. The reversal of 639086402429 is 924204680936.

639086402429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 639086402429 - 2³² = 634791435133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (639086402489) 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, 962627 + ... + 1484864.

It is an arithmetic number, because the mean of its divisors is an integer number (83366472504).

Almost surely, 2^639086402429 is an apocalyptic number.

It is an amenable number.

639086402429 is a deficient number, since it is larger than the sum of its proper divisors (27845377603).

639086402429 is a wasteful number, since it uses less digits than its factorization.

639086402429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2458867.

The product of its (nonzero) digits is 4478976, while the sum is 53.

The spelling of 639086402429 in words is "six hundred thirty-nine billion, eighty-six million, four hundred two thousand, four hundred twenty-nine".