8390047 has 2 divisors, whose sum is σ = 8390048. Its totient is φ = 8390046.

The previous prime is 8390029. The next prime is 8390051. The reversal of 8390047 is 7400938.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8390047 - 2⁷ = 8389919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8390747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4195023 + 4195024.

It is an arithmetic number, because the mean of its divisors is an integer number (4195024).

Almost surely, 2^8390047 is an apocalyptic number.

8390047 is a deficient number, since it is larger than the sum of its proper divisors (1).

8390047 is an equidigital number, since it uses as much as digits as its factorization.

8390047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 8390047 is about 2896.5577846817. The cubic root of 8390047 is about 203.1989523863.

The spelling of 8390047 in words is "eight million, three hundred ninety thousand, forty-seven".