2723572409 has 4 divisors (see below), whose sum is σ = 2724011904. Its totient is φ = 2723132916.

The previous prime is 2723572391. The next prime is 2723572421. The reversal of 2723572409 is 9042753272.

2723572409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2723572409 - 2²⁴ = 2706795193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2723572429) 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, 210317 + ... + 222890.

It is an arithmetic number, because the mean of its divisors is an integer number (681002976).

Almost surely, 2^2723572409 is an apocalyptic number.

It is an amenable number.

2723572409 is a deficient number, since it is larger than the sum of its proper divisors (439495).

2723572409 is an equidigital number, since it uses as much as digits as its factorization.

2723572409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439494.

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 2723572409 is about 52187.8569113544. The cubic root of 2723572409 is about 1396.5172631853.

The spelling of 2723572409 in words is "two billion, seven hundred twenty-three million, five hundred seventy-two thousand, four hundred nine".