8198389 has 2 divisors, whose sum is σ = 8198390. Its totient is φ = 8198388.

The previous prime is 8198381. The next prime is 8198459. The reversal of 8198389 is 9838918.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5963364 + 2235025 = 2442^2 + 1495^2 .

It is a cyclic number.

It is not a de Polignac number, because 8198389 - 2³ = 8198381 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 (8198381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4099194 + 4099195.

It is an arithmetic number, because the mean of its divisors is an integer number (4099195).

Almost surely, 2^8198389 is an apocalyptic number.

It is an amenable number.

8198389 is a deficient number, since it is larger than the sum of its proper divisors (1).

8198389 is an equidigital number, since it uses as much as digits as its factorization.

8198389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 46.

The square root of 8198389 is about 2863.2829060364. The cubic root of 8198389 is about 201.6397608467.

The spelling of 8198389 in words is "eight million, one hundred ninety-eight thousand, three hundred eighty-nine".