6394863239 has 8 divisors (see below), whose sum is σ = 6456421008. Its totient is φ = 6333338880.

The previous prime is 6394863227. The next prime is 6394863271. The reversal of 6394863239 is 9323684936.

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 6394863239 - 2¹² = 6394859143 is a prime.

It is a super-2 number, since 2×6394863239² = 81788551691027142242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6394863289) 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, 559409 + ... + 570725.

It is an arithmetic number, because the mean of its divisors is an integer number (807052626).

Almost surely, 2^6394863239 is an apocalyptic number.

6394863239 is a deficient number, since it is larger than the sum of its proper divisors (61557769).

6394863239 is a wasteful number, since it uses less digits than its factorization.

6394863239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16705.

The product of its digits is 5038848, while the sum is 53.

The square root of 6394863239 is about 79967.8887991924. Note that the first 3 decimals coincide. The cubic root of 6394863239 is about 1856.1386768989.

The spelling of 6394863239 in words is "six billion, three hundred ninety-four million, eight hundred sixty-three thousand, two hundred thirty-nine".