8632972009 has 2 divisors, whose sum is σ = 8632972010. Its totient is φ = 8632972008.

The previous prime is 8632972003. The next prime is 8632972037. The reversal of 8632972009 is 9002792368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7305462784 + 1327509225 = 85472^2 + 36435^2 .

It is a cyclic number.

It is not a de Polignac number, because 8632972009 - 2¹⁹ = 8632447721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8632972009.

It is not a weakly prime, because it can be changed into another prime (8632972003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4316486004 + 4316486005.

It is an arithmetic number, because the mean of its divisors is an integer number (4316486005).

Almost surely, 2^8632972009 is an apocalyptic number.

It is an amenable number.

8632972009 is a deficient number, since it is larger than the sum of its proper divisors (1).

8632972009 is an equidigital number, since it uses as much as digits as its factorization.

8632972009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 8632972009 is about 92913.7880456932. The cubic root of 8632972009 is about 2051.4146102929.

The spelling of 8632972009 in words is "eight billion, six hundred thirty-two million, nine hundred seventy-two thousand, nine".