8319947 has 2 divisors, whose sum is σ = 8319948. Its totient is φ = 8319946.

The previous prime is 8319943. The next prime is 8319959. The reversal of 8319947 is 7499138.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8319947 - 2² = 8319943 is a prime.

It is not a weakly prime, because it can be changed into another prime (8319943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4159973 + 4159974.

It is an arithmetic number, because the mean of its divisors is an integer number (4159974).

Almost surely, 2^8319947 is an apocalyptic number.

8319947 is a deficient number, since it is larger than the sum of its proper divisors (1).

8319947 is an equidigital number, since it uses as much as digits as its factorization.

8319947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 8319947 is about 2884.4318331346. The cubic root of 8319947 is about 202.6314504951.

The spelling of 8319947 in words is "eight million, three hundred nineteen thousand, nine hundred forty-seven".