3009409 has 4 divisors (see below), whose sum is σ = 3240916. Its totient is φ = 2777904.

The previous prime is 3009407. The next prime is 3009421. The reversal of 3009409 is 9049003.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 970225 + 2039184 = 985^2 + 1428^2 .

It is a cyclic number.

It is not a de Polignac number, because 3009409 - 2¹ = 3009407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3009401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115734 + ... + 115759.

It is an arithmetic number, because the mean of its divisors is an integer number (810229).

Almost surely, 2^3009409 is an apocalyptic number.

It is an amenable number.

3009409 is a deficient number, since it is larger than the sum of its proper divisors (231507).

3009409 is a wasteful number, since it uses less digits than its factorization.

3009409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231506.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 3009409 is about 1734.7648255599. The cubic root of 3009409 is about 144.3755788536.

The spelling of 3009409 in words is "three million, nine thousand, four hundred nine".