4398684989 has 2 divisors, whose sum is σ = 4398684990. Its totient is φ = 4398684988.

The previous prime is 4398684971. The next prime is 4398685013. The reversal of 4398684989 is 9894868934.

4398684989 is digitally balanced in base 3, because in such base 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., 4275852100 + 122832889 = 65390^2 + 11083^2 .

It is a cyclic number.

It is not a de Polignac number, because 4398684989 - 2¹² = 4398680893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4398684919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2199342494 + 2199342495.

It is an arithmetic number, because the mean of its divisors is an integer number (2199342495).

Almost surely, 2^4398684989 is an apocalyptic number.

It is an amenable number.

4398684989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4398684989 is an equidigital number, since it uses as much as digits as its factorization.

4398684989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107495424, while the sum is 68.

The square root of 4398684989 is about 66322.5827980184. The cubic root of 4398684989 is about 1638.4792800141.

The spelling of 4398684989 in words is "four billion, three hundred ninety-eight million, six hundred eighty-four thousand, nine hundred eighty-nine".