8572380009 has 4 divisors (see below), whose sum is σ = 11429840016. Its totient is φ = 5714920004.

The previous prime is 8572379993. The next prime is 8572380013. The reversal of 8572380009 is 9000832758.

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 8572380009 - 2⁴ = 8572379993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8572380049) 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, 1428729999 + ... + 1428730004.

It is an arithmetic number, because the mean of its divisors is an integer number (2857460004).

Almost surely, 2^8572380009 is an apocalyptic number.

It is an amenable number.

8572380009 is a deficient number, since it is larger than the sum of its proper divisors (2857460007).

8572380009 is a wasteful number, since it uses less digits than its factorization.

8572380009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857460006.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 8572380009 is about 92587.1481848318. The cubic root of 8572380009 is about 2046.6039356463.

The spelling of 8572380009 in words is "eight billion, five hundred seventy-two million, three hundred eighty thousand, nine".