8394893389 has 2 divisors, whose sum is σ = 8394893390. Its totient is φ = 8394893388.

The previous prime is 8394893387. The next prime is 8394893393. The reversal of 8394893389 is 9833984938.

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., 8388728100 + 6165289 = 91590^2 + 2483^2 .

It is a cyclic number.

It is not a de Polignac number, because 8394893389 - 2¹ = 8394893387 is a prime.

Together with 8394893387, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8394893389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8394893387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4197446694 + 4197446695.

It is an arithmetic number, because the mean of its divisors is an integer number (4197446695).

Almost surely, 2^8394893389 is an apocalyptic number.

It is an amenable number.

8394893389 is a deficient number, since it is larger than the sum of its proper divisors (1).

8394893389 is an equidigital number, since it uses as much as digits as its factorization.

8394893389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40310784, while the sum is 64.

The square root of 8394893389 is about 91623.6508168060. The cubic root of 8394893389 is about 2032.3806983155.

The spelling of 8394893389 in words is "eight billion, three hundred ninety-four million, eight hundred ninety-three thousand, three hundred eighty-nine".