6403847 has 2 divisors, whose sum is σ = 6403848. Its totient is φ = 6403846.

The previous prime is 6403811. The next prime is 6403853. The reversal of 6403847 is 7483046.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6403847 - 2¹⁴ = 6387463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6403877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3201923 + 3201924.

It is an arithmetic number, because the mean of its divisors is an integer number (3201924).

Almost surely, 2^6403847 is an apocalyptic number.

6403847 is a deficient number, since it is larger than the sum of its proper divisors (1).

6403847 is an equidigital number, since it uses as much as digits as its factorization.

6403847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 6403847 is about 2530.5823440465. The cubic root of 6403847 is about 185.7007462939.

The spelling of 6403847 in words is "six million, four hundred three thousand, eight hundred forty-seven".