4809689 has 2 divisors, whose sum is σ = 4809690. Its totient is φ = 4809688.

The previous prime is 4809683. The next prime is 4809703. The reversal of 4809689 is 9869084.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4443664 + 366025 = 2108^2 + 605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4809689 is a prime.

It is a super-3 number, since 3×4809689³ (a number of 21 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (4809683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2404844 + 2404845.

It is an arithmetic number, because the mean of its divisors is an integer number (2404845).

Almost surely, 2^4809689 is an apocalyptic number.

It is an amenable number.

4809689 is a deficient number, since it is larger than the sum of its proper divisors (1).

4809689 is an equidigital number, since it uses as much as digits as its factorization.

4809689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 4809689 is about 2193.1003169030. The cubic root of 4809689 is about 168.7999570427.

The spelling of 4809689 in words is "four million, eight hundred nine thousand, six hundred eighty-nine".