4004870809 has 4 divisors (see below), whose sum is σ = 4014858420. Its totient is φ = 3994883200.

The previous prime is 4004870803. The next prime is 4004870813. The reversal of 4004870809 is 9080784004.

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 2435126409 + 1569744400 = 49347^2 + 39620^2 .

It is a cyclic number.

It is not a de Polignac number, because 4004870809 - 2¹⁵ = 4004838041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4004870803) 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, 4993204 + ... + 4994005.

It is an arithmetic number, because the mean of its divisors is an integer number (1003714605).

Almost surely, 2^4004870809 is an apocalyptic number.

It is an amenable number.

4004870809 is a deficient number, since it is larger than the sum of its proper divisors (9987611).

4004870809 is an equidigital number, since it uses as much as digits as its factorization.

4004870809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9987610.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 4004870809 is about 63284.0486141650. The cubic root of 4004870809 is about 1588.0451178896.

The spelling of 4004870809 in words is "four billion, four million, eight hundred seventy thousand, eight hundred nine".