860001449 has 2 divisors, whose sum is σ = 860001450. Its totient is φ = 860001448.

The previous prime is 860001391. The next prime is 860001451. The reversal of 860001449 is 944100068.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 609349225 + 250652224 = 24685^2 + 15832^2 .

It is a cyclic number.

It is not a de Polignac number, because 860001449 - 2¹² = 859997353 is a prime.

It is a Sophie Germain prime.

Together with 860001451, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (860001949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430000724 + 430000725.

It is an arithmetic number, because the mean of its divisors is an integer number (430000725).

Almost surely, 2^860001449 is an apocalyptic number.

It is an amenable number.

860001449 is a deficient number, since it is larger than the sum of its proper divisors (1).

860001449 is an equidigital number, since it uses as much as digits as its factorization.

860001449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 860001449 is about 29325.7813024649. The cubic root of 860001449 is about 950.9690753960.

The spelling of 860001449 in words is "eight hundred sixty million, one thousand, four hundred forty-nine".