860743993 has 2 divisors, whose sum is σ = 860743994. Its totient is φ = 860743992.

The previous prime is 860743963. The next prime is 860743997. The reversal of 860743993 is 399347068.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 781034809 + 79709184 = 27947^2 + 8928^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-860743993 is a prime.

It is not a weakly prime, because it can be changed into another prime (860743997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430371996 + 430371997.

It is an arithmetic number, because the mean of its divisors is an integer number (430371997).

Almost surely, 2^860743993 is an apocalyptic number.

It is an amenable number.

860743993 is a deficient number, since it is larger than the sum of its proper divisors (1).

860743993 is an equidigital number, since it uses as much as digits as its factorization.

860743993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 49.

The square root of 860743993 is about 29338.4388303127. The cubic root of 860743993 is about 951.2426924727.

The spelling of 860743993 in words is "eight hundred sixty million, seven hundred forty-three thousand, nine hundred ninety-three".