6428826639 has 6 divisors (see below), whose sum is σ = 9286082936. Its totient is φ = 4285884420.

The previous prime is 6428826629. The next prime is 6428826653. The reversal of 6428826639 is 9366288246.

It is not a de Polignac number, because 6428826639 - 2²⁵ = 6395272207 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 (6428826629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 357157027 + ... + 357157044.

Almost surely, 2^6428826639 is an apocalyptic number.

6428826639 is a deficient number, since it is larger than the sum of its proper divisors (2857256297).

6428826639 is a wasteful number, since it uses less digits than its factorization.

6428826639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714314077 (or 714314074 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 54.

The square root of 6428826639 is about 80179.9640745741. The cubic root of 6428826639 is about 1859.4188880101.

The spelling of 6428826639 in words is "six billion, four hundred twenty-eight million, eight hundred twenty-six thousand, six hundred thirty-nine".