2784009 has 8 divisors (see below), whose sum is σ = 3754080. Its totient is φ = 1834976.

The previous prime is 2784007. The next prime is 2784043. The reversal of 2784009 is 9004872.

2784009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2784009 - 2¹ = 2784007 is a prime.

It is a super-2 number, since 2×2784009² = 15501412224162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2784007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4947 + ... + 5480.

It is an arithmetic number, because the mean of its divisors is an integer number (469260).

2^2784009 is an apocalyptic number.

It is an amenable number.

2784009 is a deficient number, since it is larger than the sum of its proper divisors (970071).

2784009 is a wasteful number, since it uses less digits than its factorization.

2784009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10519.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 2784009 is about 1668.5349861480. The cubic root of 2784009 is about 140.6771447114.

The spelling of 2784009 in words is "two million, seven hundred eighty-four thousand, nine".