6939744 has 96 divisors (see below), whose sum is σ = 21772800. Its totient is φ = 1892352.

The previous prime is 6939743. The next prime is 6939749. The reversal of 6939744 is 4479396.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 6939696 and 6939705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6939743) 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, 15232 + ... + 15680.

It is an arithmetic number, because the mean of its divisors is an integer number (226800).

Almost surely, 2^6939744 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 6939744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10886400).

6939744 is an abundant number, since it is smaller than the sum of its proper divisors (14833056).

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

6939744 is a wasteful number, since it uses less digits than its factorization.

6939744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 484 counting only the distinct ones).

The product of its digits is 163296, while the sum is 42.

The square root of 6939744 is about 2634.3393858803. The cubic root of 6939744 is about 190.7426520510.

It can be divided in two parts, 69 and 39744, that multiplied together give a square (2742336 = 1656²).

The spelling of 6939744 in words is "six million, nine hundred thirty-nine thousand, seven hundred forty-four".