4347539981 has 2 divisors, whose sum is σ = 4347539982. Its totient is φ = 4347539980.

The previous prime is 4347539941. The next prime is 4347540011. The reversal of 4347539981 is 1899357434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4233584356 + 113955625 = 65066^2 + 10675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4347539981 is a prime.

It is a super-2 number, since 2×4347539981² = 37802207772786960722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4347539941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2173769990 + 2173769991.

It is an arithmetic number, because the mean of its divisors is an integer number (2173769991).

Almost surely, 2^4347539981 is an apocalyptic number.

It is an amenable number.

4347539981 is a deficient number, since it is larger than the sum of its proper divisors (1).

4347539981 is an equidigital number, since it uses as much as digits as its factorization.

4347539981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 53.

The square root of 4347539981 is about 65935.8777980547. The cubic root of 4347539981 is about 1632.1041216018.

The spelling of 4347539981 in words is "four billion, three hundred forty-seven million, five hundred thirty-nine thousand, nine hundred eighty-one".