4681009 has 2 divisors, whose sum is σ = 4681010. Its totient is φ = 4681008.

The previous prime is 4681007. The next prime is 4681037. The reversal of 4681009 is 9001864.

It is an a-pointer prime, because the next prime (4681037) can be obtained adding 4681009 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2650384 + 2030625 = 1628^2 + 1425^2 .

It is a cyclic number.

It is not a de Polignac number, because 4681009 - 2¹ = 4681007 is a prime.

Together with 4681007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4681003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2340504 + 2340505.

It is an arithmetic number, because the mean of its divisors is an integer number (2340505).

Almost surely, 2^4681009 is an apocalyptic number.

It is an amenable number.

4681009 is a deficient number, since it is larger than the sum of its proper divisors (1).

4681009 is an equidigital number, since it uses as much as digits as its factorization.

4681009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 4681009 is about 2163.5639579176. The cubic root of 4681009 is about 167.2809522489.

The spelling of 4681009 in words is "four million, six hundred eighty-one thousand, nine".