2409409 has 8 divisors (see below), whose sum is σ = 2552480. Its totient is φ = 2268000.

The previous prime is 2409401. The next prime is 2409431. The reversal of 2409409 is 9049042.

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

It is a cyclic number.

It is not a de Polignac number, because 2409409 - 2³ = 2409401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2409401) 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, 3709 + ... + 4309.

It is an arithmetic number, because the mean of its divisors is an integer number (319060).

2^2409409 is an apocalyptic number.

It is an amenable number.

2409409 is a deficient number, since it is larger than the sum of its proper divisors (143071).

2409409 is a wasteful number, since it uses less digits than its factorization.

2409409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 2409409 is about 1552.2271096718. The cubic root of 2409409 is about 134.0613256092.

It can be divided in two parts, 2 and 409409, that multiplied together give a palindrome (818818).

The spelling of 2409409 in words is "two million, four hundred nine thousand, four hundred nine".