8572959749 has 2 divisors, whose sum is σ = 8572959750. Its totient is φ = 8572959748.

The previous prime is 8572959667. The next prime is 8572959761. The reversal of 8572959749 is 9479592758.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8570130625 + 2829124 = 92575^2 + 1682^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8572959749 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8572955749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4286479874 + 4286479875.

It is an arithmetic number, because the mean of its divisors is an integer number (4286479875).

Almost surely, 2^8572959749 is an apocalyptic number.

It is an amenable number.

8572959749 is a deficient number, since it is larger than the sum of its proper divisors (1).

8572959749 is an equidigital number, since it uses as much as digits as its factorization.

8572959749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57153600, while the sum is 65.

The square root of 8572959749 is about 92590.2789119895. The cubic root of 8572959749 is about 2046.6500710805.

The spelling of 8572959749 in words is "eight billion, five hundred seventy-two million, nine hundred fifty-nine thousand, seven hundred forty-nine".