6859944 has 128 divisors (see below), whose sum is σ = 23520000. Its totient is φ = 1804032.

The previous prime is 6859943. The next prime is 6859961. The reversal of 6859944 is 4499586.

It is a happy number.

Its product of digits (311040) is a multiple of the sum of its prime factors (384).

It is a self number, because there is not a number n which added to its sum of digits gives 6859944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6859943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19482 + ... + 19830.

It is an arithmetic number, because the mean of its divisors is an integer number (183750).

Almost surely, 2^6859944 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 6859944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11760000).

6859944 is an abundant number, since it is smaller than the sum of its proper divisors (16660056).

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

6859944 is a wasteful number, since it uses less digits than its factorization.

6859944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 374 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 6859944 is about 2619.1494802703. The cubic root of 6859944 is about 190.0087161283.

The spelling of 6859944 in words is "six million, eight hundred fifty-nine thousand, nine hundred forty-four".