4272523609 has 4 divisors (see below), whose sum is σ = 4353137316. Its totient is φ = 4191909904.

The previous prime is 4272523601. The next prime is 4272523637. The reversal of 4272523609 is 9063252724.

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 3599640009 + 672883600 = 59997^2 + 25940^2 .

It is a cyclic number.

It is not a de Polignac number, because 4272523609 - 2³ = 4272523601 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4272523601) 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, 40306774 + ... + 40306879.

It is an arithmetic number, because the mean of its divisors is an integer number (1088284329).

Almost surely, 2^4272523609 is an apocalyptic number.

It is an amenable number.

4272523609 is a deficient number, since it is larger than the sum of its proper divisors (80613707).

4272523609 is an equidigital number, since it uses as much as digits as its factorization.

4272523609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80613706.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 4272523609 is about 65364.5439745433. The cubic root of 4272523609 is about 1622.6623408732.

The spelling of 4272523609 in words is "four billion, two hundred seventy-two million, five hundred twenty-three thousand, six hundred nine".