4347947 has 2 divisors, whose sum is σ = 4347948. Its totient is φ = 4347946.

The previous prime is 4347929. The next prime is 4347977. The reversal of 4347947 is 7497434.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4347947 - 2¹⁸ = 4085803 is a prime.

It is a super-2 number, since 2×4347947² = 37809286229618, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 4347947.

It is not a weakly prime, because it can be changed into another prime (4347977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2173973 + 2173974.

It is an arithmetic number, because the mean of its divisors is an integer number (2173974).

Almost surely, 2^4347947 is an apocalyptic number.

4347947 is a deficient number, since it is larger than the sum of its proper divisors (1).

4347947 is an equidigital number, since it uses as much as digits as its factorization.

4347947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 38.

The square root of 4347947 is about 2085.1731342984. The cubic root of 4347947 is about 163.2155052830.

The spelling of 4347947 in words is "four million, three hundred forty-seven thousand, nine hundred forty-seven".