6139939 has 12 divisors (see below), whose sum is σ = 6798816. Its totient is φ = 5539872.

The previous prime is 6139937. The next prime is 6139949. The reversal of 6139939 is 9399316.

It is not a de Polignac number, because 6139939 - 2¹ = 6139937 is a prime.

It is a Duffinian number.

6139939 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6139937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7557 + ... + 8329.

It is an arithmetic number, because the mean of its divisors is an integer number (566568).

Almost surely, 2^6139939 is an apocalyptic number.

6139939 is a deficient number, since it is larger than the sum of its proper divisors (658877).

6139939 is a wasteful number, since it uses less digits than its factorization.

6139939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846 (or 833 counting only the distinct ones).

The product of its digits is 39366, while the sum is 40.

The square root of 6139939 is about 2477.8900298439. The cubic root of 6139939 is about 183.1139167501.

It can be divided in two parts, 61 and 39939, that added together give a square (40000 = 200²).

The spelling of 6139939 in words is "six million, one hundred thirty-nine thousand, nine hundred thirty-nine".