9830399989 has 2 divisors, whose sum is σ = 9830399990. Its totient is φ = 9830399988.

The previous prime is 9830399963. The next prime is 9830400007. The reversal of 9830399989 is 9899930389.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6491524900 + 3338875089 = 80570^2 + 57783^2 .

It is a cyclic number.

It is not a de Polignac number, because 9830399989 - 2⁹ = 9830399477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9830399959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4915199994 + 4915199995.

It is an arithmetic number, because the mean of its divisors is an integer number (4915199995).

Almost surely, 2^9830399989 is an apocalyptic number.

It is an amenable number.

9830399989 is a deficient number, since it is larger than the sum of its proper divisors (1).

9830399989 is an equidigital number, since it uses as much as digits as its factorization.

9830399989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34012224, while the sum is 67.

The square root of 9830399989 is about 99148.3736074375. The cubic root of 9830399989 is about 2142.1854394639.

The spelling of 9830399989 in words is "nine billion, eight hundred thirty million, three hundred ninety-nine thousand, nine hundred eighty-nine".