9890000389 has 2 divisors, whose sum is σ = 9890000390. Its totient is φ = 9890000388.

The previous prime is 9890000357. The next prime is 9890000429. The reversal of 9890000389 is 9830000989.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9404150625 + 485849764 = 96975^2 + 22042^2 .

It is a cyclic number.

It is not a de Polignac number, because 9890000389 - 2⁵ = 9890000357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9890004389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4945000194 + 4945000195.

It is an arithmetic number, because the mean of its divisors is an integer number (4945000195).

Almost surely, 2^9890000389 is an apocalyptic number.

It is an amenable number.

9890000389 is a deficient number, since it is larger than the sum of its proper divisors (1).

9890000389 is an equidigital number, since it uses as much as digits as its factorization.

9890000389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 9890000389 is about 99448.4810794011. The cubic root of 9890000389 is about 2146.5059808155.

The spelling of 9890000389 in words is "nine billion, eight hundred ninety million, three hundred eighty-nine", and thus it is an aban number.