2856004409 has 4 divisors (see below), whose sum is σ = 2857243620. Its totient is φ = 2854765200.

The previous prime is 2856004381. The next prime is 2856004421. The reversal of 2856004409 is 9044006582.

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 2567955625 + 288048784 = 50675^2 + 16972^2 .

It is a cyclic number.

It is not a de Polignac number, because 2856004409 - 2¹² = 2856000313 is a prime.

It is a super-2 number, since 2×2856004409² = 16313522368454878562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2856004439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 616142 + ... + 620759.

It is an arithmetic number, because the mean of its divisors is an integer number (714310905).

Almost surely, 2^2856004409 is an apocalyptic number.

It is an amenable number.

2856004409 is a deficient number, since it is larger than the sum of its proper divisors (1239211).

2856004409 is a wasteful number, since it uses less digits than its factorization.

2856004409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239210.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 2856004409 is about 53441.5981142031. The cubic root of 2856004409 is about 1418.7949190459.

The spelling of 2856004409 in words is "two billion, eight hundred fifty-six million, four thousand, four hundred nine".