6939642 has 16 divisors (see below), whose sum is σ = 14358240. Its totient is φ = 2233392.

The previous prime is 6939623. The next prime is 6939643. The reversal of 6939642 is 2469396.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6939642.

It is not an unprimeable number, because it can be changed into a prime (6939643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19768 + ... + 20115.

It is an arithmetic number, because the mean of its divisors is an integer number (897390).

Almost surely, 2^6939642 is an apocalyptic number.

6939642 is an abundant number, since it is smaller than the sum of its proper divisors (7418598).

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

6939642 is a wasteful number, since it uses less digits than its factorization.

6939642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39917.

The product of its digits is 69984, while the sum is 39.

The square root of 6939642 is about 2634.3200261168. The cubic root of 6939642 is about 190.7417175379.

The spelling of 6939642 in words is "six million, nine hundred thirty-nine thousand, six hundred forty-two".