3909340 has 24 divisors (see below), whose sum is σ = 8351280. Its totient is φ = 1536768.

The previous prime is 3909329. The next prime is 3909341. The reversal of 3909340 is 439093.

It is a junction number, because it is equal to n+sod(n) for n = 3909299 and 3909308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3909341) 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, 477 + ... + 2836.

It is an arithmetic number, because the mean of its divisors is an integer number (347970).

Almost surely, 2^3909340 is an apocalyptic number.

It is an amenable number.

3909340 is an abundant number, since it is smaller than the sum of its proper divisors (4441940).

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

3909340 is a wasteful number, since it uses less digits than its factorization.

3909340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3381 (or 3379 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 3909340 is about 1977.2050981120. The cubic root of 3909340 is about 157.5316472896.

It can be divided in two parts, 390 and 9340, that added together give a triangular number (9730 = T₁₃₉).

The spelling of 3909340 in words is "three million, nine hundred nine thousand, three hundred forty".