8632009 has 2 divisors, whose sum is σ = 8632010. Its totient is φ = 8632008.

The previous prime is 8632003. The next prime is 8632027. The reversal of 8632009 is 9002368.

8632009 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5198400 + 3433609 = 2280^2 + 1853^2 .

It is a cyclic number.

It is not a de Polignac number, because 8632009 - 2⁵ = 8631977 is a prime.

It is not a weakly prime, because it can be changed into another prime (8632003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4316004 + 4316005.

It is an arithmetic number, because the mean of its divisors is an integer number (4316005).

Almost surely, 2^8632009 is an apocalyptic number.

It is an amenable number.

8632009 is a deficient number, since it is larger than the sum of its proper divisors (1).

8632009 is an equidigital number, since it uses as much as digits as its factorization.

8632009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 8632009 is about 2938.0280801926. The cubic root of 8632009 is about 205.1338328946.

The spelling of 8632009 in words is "eight million, six hundred thirty-two thousand, nine".