6139863 has 6 divisors (see below), whose sum is σ = 8868704. Its totient is φ = 4093236.

The previous prime is 6139853. The next prime is 6139871. The reversal of 6139863 is 3689316.

It is a happy number.

It is not a de Polignac number, because 6139863 - 2⁹ = 6139351 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 (6139853) 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, 341095 + ... + 341112.

Almost surely, 2^6139863 is an apocalyptic number.

6139863 is a deficient number, since it is larger than the sum of its proper divisors (2728841).

6139863 is a wasteful number, since it uses less digits than its factorization.

6139863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682213 (or 682210 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 6139863 is about 2477.8746941684. The cubic root of 6139863 is about 183.1131612206.

The spelling of 6139863 in words is "six million, one hundred thirty-nine thousand, eight hundred sixty-three".