9399989 has 2 divisors, whose sum is σ = 9399990. Its totient is φ = 9399988.

The previous prime is 9399983. The next prime is 9400009. The reversal of 9399989 is 9899939.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9060100 + 339889 = 3010^2 + 583^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9399989 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9399983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4699994 + 4699995.

It is an arithmetic number, because the mean of its divisors is an integer number (4699995).

Almost surely, 2^9399989 is an apocalyptic number.

It is an amenable number.

9399989 is a deficient number, since it is larger than the sum of its proper divisors (1).

9399989 is an equidigital number, since it uses as much as digits as its factorization.

9399989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1417176, while the sum is 56.

The square root of 9399989 is about 3065.9401494485. The cubic root of 9399989 is about 211.0453471263.

The spelling of 9399989 in words is "nine million, three hundred ninety-nine thousand, nine hundred eighty-nine".