867347249 has 2 divisors, whose sum is σ = 867347250. Its totient is φ = 867347248.

The previous prime is 867347203. The next prime is 867347263. The reversal of 867347249 is 942743768.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 455054224 + 412293025 = 21332^2 + 20305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-867347249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 867347197 and 867347206.

It is not a weakly prime, because it can be changed into another prime (867340249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433673624 + 433673625.

It is an arithmetic number, because the mean of its divisors is an integer number (433673625).

Almost surely, 2^867347249 is an apocalyptic number.

It is an amenable number.

867347249 is a deficient number, since it is larger than the sum of its proper divisors (1).

867347249 is an equidigital number, since it uses as much as digits as its factorization.

867347249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 50.

The square root of 867347249 is about 29450.7597355314. The cubic root of 867347249 is about 953.6690061063.

The spelling of 867347249 in words is "eight hundred sixty-seven million, three hundred forty-seven thousand, two hundred forty-nine".