9632447989 has 2 divisors, whose sum is σ = 9632447990. Its totient is φ = 9632447988.

The previous prime is 9632447983. The next prime is 9632448011. The reversal of 9632447989 is 9897442369.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9567774225 + 64673764 = 97815^2 + 8042^2 .

It is an emirp because it is prime and its reverse (9897442369) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9632447989 - 2¹³ = 9632439797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9632447983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4816223994 + 4816223995.

It is an arithmetic number, because the mean of its divisors is an integer number (4816223995).

Almost surely, 2^9632447989 is an apocalyptic number.

It is an amenable number.

9632447989 is a deficient number, since it is larger than the sum of its proper divisors (1).

9632447989 is an equidigital number, since it uses as much as digits as its factorization.

9632447989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23514624, while the sum is 61.

The square root of 9632447989 is about 98145.0354781127. The cubic root of 9632447989 is about 2127.7089687554.

The spelling of 9632447989 in words is "nine billion, six hundred thirty-two million, four hundred forty-seven thousand, nine hundred eighty-nine".