6398839429 has 4 divisors (see below), whose sum is σ = 6488964000. Its totient is φ = 6308714860.

The previous prime is 6398839397. The next prime is 6398839463. The reversal of 6398839429 is 9249388936.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6398839429 - 2⁵ = 6398839397 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 (6398830429) 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 3 ways as a sum of consecutive naturals, for example, 45062179 + ... + 45062320.

It is an arithmetic number, because the mean of its divisors is an integer number (1622241000).

Almost surely, 2^6398839429 is an apocalyptic number.

It is an amenable number.

6398839429 is a deficient number, since it is larger than the sum of its proper divisors (90124571).

6398839429 is an equidigital number, since it uses as much as digits as its factorization.

6398839429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90124570.

The product of its digits is 20155392, while the sum is 61.

The square root of 6398839429 is about 79992.7461023811. The cubic root of 6398839429 is about 1856.5232997150.

The spelling of 6398839429 in words is "six billion, three hundred ninety-eight million, eight hundred thirty-nine thousand, four hundred twenty-nine".