2404809 has 20 divisors (see below), whose sum is σ = 3920400. Its totient is φ = 1456920.

The previous prime is 2404807. The next prime is 2404813. The reversal of 2404809 is 9084042.

It is not a de Polignac number, because 2404809 - 2¹ = 2404807 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2404807) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 459 + ... + 2240.

It is an arithmetic number, because the mean of its divisors is an integer number (196020).

2^2404809 is an apocalyptic number.

It is an amenable number.

2404809 is a deficient number, since it is larger than the sum of its proper divisors (1515591).

2404809 is a wasteful number, since it uses less digits than its factorization.

2404809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722 (or 2713 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 2404809 is about 1550.7446598328. The cubic root of 2404809 is about 133.9759554392.

The spelling of 2404809 in words is "two million, four hundred four thousand, eight hundred nine".