8648389 has 2 divisors, whose sum is σ = 8648390. Its totient is φ = 8648388.

The previous prime is 8648371. The next prime is 8648413. The reversal of 8648389 is 9838468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4588164 + 4060225 = 2142^2 + 2015^2 .

It is a cyclic number.

It is not a de Polignac number, because 8648389 - 2¹³ = 8640197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8648369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4324194 + 4324195.

It is an arithmetic number, because the mean of its divisors is an integer number (4324195).

Almost surely, 2^8648389 is an apocalyptic number.

It is an amenable number.

8648389 is a deficient number, since it is larger than the sum of its proper divisors (1).

8648389 is an equidigital number, since it uses as much as digits as its factorization.

8648389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 46.

The square root of 8648389 is about 2940.8143430009. The cubic root of 8648389 is about 205.2635041011.

The spelling of 8648389 in words is "eight million, six hundred forty-eight thousand, three hundred eighty-nine".