6389849 has 2 divisors, whose sum is σ = 6389850. Its totient is φ = 6389848.

The previous prime is 6389821. The next prime is 6389861. The reversal of 6389849 is 9489836.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3829849 + 2560000 = 1957^2 + 1600^2 .

It is a cyclic number.

It is not a de Polignac number, because 6389849 - 2¹⁶ = 6324313 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 6 + 3¹⁰ + 8⁵ + 9 + 8⁷ + 4¹¹ + 9⁴ .

It is not a weakly prime, because it can be changed into another prime (6389819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3194924 + 3194925.

It is an arithmetic number, because the mean of its divisors is an integer number (3194925).

Almost surely, 2^6389849 is an apocalyptic number.

It is an amenable number.

6389849 is a deficient number, since it is larger than the sum of its proper divisors (1).

6389849 is an equidigital number, since it uses as much as digits as its factorization.

6389849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 47.

The square root of 6389849 is about 2527.8150644381. The cubic root of 6389849 is about 185.5653414679.

The spelling of 6389849 in words is "six million, three hundred eighty-nine thousand, eight hundred forty-nine".