6839964 has 72 divisors (see below), whose sum is σ = 18590208. Its totient is φ = 2196720.

The previous prime is 6839939. The next prime is 6839971. The reversal of 6839964 is 4699386.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30019 + ... + 30245.

Almost surely, 2^6839964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6839964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9295104).

6839964 is an abundant number, since it is smaller than the sum of its proper divisors (11750244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6839964 is a wasteful number, since it uses less digits than its factorization.

6839964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 263 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 6839964 is about 2615.3324836433. The cubic root of 6839964 is about 189.8240661347.

The spelling of 6839964 in words is "six million, eight hundred thirty-nine thousand, nine hundred sixty-four".