6840163399 has 4 divisors (see below), whose sum is σ = 6856411240. Its totient is φ = 6823915560.

The previous prime is 6840163357. The next prime is 6840163403. The reversal of 6840163399 is 9933610486.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6840163399 - 2¹⁵ = 6840130631 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 (6840163339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8123289 + ... + 8124130.

It is an arithmetic number, because the mean of its divisors is an integer number (1714102810).

Almost surely, 2^6840163399 is an apocalyptic number.

6840163399 is a deficient number, since it is larger than the sum of its proper divisors (16247841).

6840163399 is a wasteful number, since it uses less digits than its factorization.

6840163399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16247840.

The product of its (nonzero) digits is 839808, while the sum is 49.

The square root of 6840163399 is about 82705.2803574234. The cubic root of 6840163399 is about 1898.2591070396.

The spelling of 6840163399 in words is "six billion, eight hundred forty million, one hundred sixty-three thousand, three hundred ninety-nine".