6939738 has 48 divisors (see below), whose sum is σ = 16563456. Its totient is φ = 2086560.

The previous prime is 6939733. The next prime is 6939743. The reversal of 6939738 is 8379396.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6939733) and next prime (6939743).

It is a junction number, because it is equal to n+sod(n) for n = 6939693 and 6939702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6939733) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10683 + ... + 11313.

It is an arithmetic number, because the mean of its divisors is an integer number (345072).

Almost surely, 2^6939738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6939738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8281728).

6939738 is an abundant number, since it is smaller than the sum of its proper divisors (9623718).

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

6939738 is a wasteful number, since it uses less digits than its factorization.

6939738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699 (or 696 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 6939738 is about 2634.3382470746. The cubic root of 6939738 is about 190.7425970799.

The spelling of 6939738 in words is "six million, nine hundred thirty-nine thousand, seven hundred thirty-eight".