8409340 has 12 divisors (see below), whose sum is σ = 17659656. Its totient is φ = 3363728.

The previous prime is 8409319. The next prime is 8409353. The reversal of 8409340 is 439048.

It is a junction number, because it is equal to n+sod(n) for n = 8409299 and 8409308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210214 + ... + 210253.

It is an arithmetic number, because the mean of its divisors is an integer number (1471638).

Almost surely, 2^8409340 is an apocalyptic number.

It is an amenable number.

8409340 is an abundant number, since it is smaller than the sum of its proper divisors (9250316).

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

8409340 is a wasteful number, since it uses less digits than its factorization.

8409340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420476 (or 420474 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 8409340 is about 2899.8862046639. The cubic root of 8409340 is about 203.3545858523.

The spelling of 8409340 in words is "eight million, four hundred nine thousand, three hundred forty".