6421488839 has 8 divisors (see below), whose sum is σ = 6676294128. Its totient is φ = 6171359040.

The previous prime is 6421488823. The next prime is 6421488847. The reversal of 6421488839 is 9388841246.

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 6421488839 - 2⁴ = 6421488823 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 (6421488809) 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, 1166072 + ... + 1171565.

It is an arithmetic number, because the mean of its divisors is an integer number (834536766).

Almost surely, 2^6421488839 is an apocalyptic number.

6421488839 is a deficient number, since it is larger than the sum of its proper divisors (254805289).

6421488839 is a wasteful number, since it uses less digits than its factorization.

6421488839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337745.

The product of its digits is 2654208, while the sum is 53.

The square root of 6421488839 is about 80134.1926957525. The cubic root of 6421488839 is about 1858.7111778251.

The spelling of 6421488839 in words is "six billion, four hundred twenty-one million, four hundred eighty-eight thousand, eight hundred thirty-nine".