4398689 has 2 divisors, whose sum is σ = 4398690. Its totient is φ = 4398688.

The previous prime is 4398679. The next prime is 4398697. The reversal of 4398689 is 9868934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3579664 + 819025 = 1892^2 + 905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4398689 is a prime.

It is not a weakly prime, because it can be changed into another prime (4398679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2199344 + 2199345.

It is an arithmetic number, because the mean of its divisors is an integer number (2199345).

Almost surely, 2^4398689 is an apocalyptic number.

It is an amenable number.

4398689 is a deficient number, since it is larger than the sum of its proper divisors (1).

4398689 is an equidigital number, since it uses as much as digits as its factorization.

4398689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 47.

The square root of 4398689 is about 2097.3051756957. The cubic root of 4398689 is about 163.8479778037.

The spelling of 4398689 in words is "four million, three hundred ninety-eight thousand, six hundred eighty-nine".