2406409 has 8 divisors (see below), whose sum is σ = 2483712. Its totient is φ = 2330160.

The previous prime is 2406379. The next prime is 2406457. The reversal of 2406409 is 9046042.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2406409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2406479) 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, 8067 + ... + 8359.

It is an arithmetic number, because the mean of its divisors is an integer number (310464).

2^2406409 is an apocalyptic number.

It is an amenable number.

2406409 is a deficient number, since it is larger than the sum of its proper divisors (77303).

2406409 is a wasteful number, since it uses less digits than its factorization.

2406409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 2406409 is about 1551.2604552428. The cubic root of 2406409 is about 134.0056617493.

The spelling of 2406409 in words is "two million, four hundred six thousand, four hundred nine".