6868939 has 16 divisors (see below), whose sum is σ = 8798976. Its totient is φ = 5205600.

The previous prime is 6868921. The next prime is 6868987. The reversal of 6868939 is 9398686.

It is a cyclic number.

It is not a de Polignac number, because 6868939 - 2⁷ = 6868811 is a prime.

It is a Duffinian number.

6868939 is a lucky number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 6868892 and 6868901.

It is not an unprimeable number, because it can be changed into a prime (6868999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1644 + ... + 4054.

It is an arithmetic number, because the mean of its divisors is an integer number (549936).

Almost surely, 2^6868939 is an apocalyptic number.

6868939 is a deficient number, since it is larger than the sum of its proper divisors (1930037).

6868939 is a wasteful number, since it uses less digits than its factorization.

6868939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466.

The product of its digits is 559872, while the sum is 49.

The square root of 6868939 is about 2620.8660782268. The cubic root of 6868939 is about 190.0917285612.

The spelling of 6868939 in words is "six million, eight hundred sixty-eight thousand, nine hundred thirty-nine".