6909140 has 48 divisors (see below), whose sum is σ = 17563392. Its totient is φ = 2228736.

The previous prime is 6909127. The next prime is 6909151. The reversal of 6909140 is 419096.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 929 + ... + 3831.

It is an arithmetic number, because the mean of its divisors is an integer number (365904).

Almost surely, 2^6909140 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 6909140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8781696).

6909140 is an abundant number, since it is smaller than the sum of its proper divisors (10654252).

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

6909140 is a wasteful number, since it uses less digits than its factorization.

6909140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2936 (or 2934 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 6909140 is about 2628.5243008198. The cubic root of 6909140 is about 190.4618496544.

The spelling of 6909140 in words is "six million, nine hundred nine thousand, one hundred forty".