8531979229 has 2 divisors, whose sum is σ = 8531979230. Its totient is φ = 8531979228.

The previous prime is 8531979187. The next prime is 8531979257. The reversal of 8531979229 is 9229791358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6355756729 + 2176222500 = 79723^2 + 46650^2 .

It is a cyclic number.

It is not a de Polignac number, because 8531979229 - 2¹³ = 8531971037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8531979229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8531979259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4265989614 + 4265989615.

It is an arithmetic number, because the mean of its divisors is an integer number (4265989615).

Almost surely, 2^8531979229 is an apocalyptic number.

It is an amenable number.

8531979229 is a deficient number, since it is larger than the sum of its proper divisors (1).

8531979229 is an equidigital number, since it uses as much as digits as its factorization.

8531979229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 55.

The square root of 8531979229 is about 92368.7134748558. The cubic root of 8531979229 is about 2043.3837241104.

The spelling of 8531979229 in words is "eight billion, five hundred thirty-one million, nine hundred seventy-nine thousand, two hundred twenty-nine".