8572871449 has 2 divisors, whose sum is σ = 8572871450. Its totient is φ = 8572871448.

The previous prime is 8572871441. The next prime is 8572871467. The reversal of 8572871449 is 9441782758.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8531847424 + 41024025 = 92368^2 + 6405^2 .

It is a cyclic number.

It is not a de Polignac number, because 8572871449 - 2³ = 8572871441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8572871449.

It is not a weakly prime, because it can be changed into another prime (8572871441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4286435724 + 4286435725.

It is an arithmetic number, because the mean of its divisors is an integer number (4286435725).

Almost surely, 2^8572871449 is an apocalyptic number.

It is an amenable number.

8572871449 is a deficient number, since it is larger than the sum of its proper divisors (1).

8572871449 is an equidigital number, since it uses as much as digits as its factorization.

8572871449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4515840, while the sum is 55.

The square root of 8572871449 is about 92589.8020788467. The cubic root of 8572871449 is about 2046.6430443426.

The spelling of 8572871449 in words is "eight billion, five hundred seventy-two million, eight hundred seventy-one thousand, four hundred forty-nine".