82008947 has 2 divisors, whose sum is σ = 82008948. Its totient is φ = 82008946.

The previous prime is 82008943. The next prime is 82008989. The reversal of 82008947 is 74980028.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82008947 - 2² = 82008943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82008947.

It is not a weakly prime, because it can be changed into another prime (82008943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41004473 + 41004474.

It is an arithmetic number, because the mean of its divisors is an integer number (41004474).

Almost surely, 2^82008947 is an apocalyptic number.

82008947 is a deficient number, since it is larger than the sum of its proper divisors (1).

82008947 is an equidigital number, since it uses as much as digits as its factorization.

82008947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 82008947 is about 9055.8791400946. The cubic root of 82008947 is about 434.4639488461.

The spelling of 82008947 in words is "eighty-two million, eight thousand, nine hundred forty-seven".