512393993 has 2 divisors, whose sum is σ = 512393994. Its totient is φ = 512393992.

The previous prime is 512393971. The next prime is 512394017. The reversal of 512393993 is 399393215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 494484169 + 17909824 = 22237^2 + 4232^2 .

It is a cyclic number.

It is not a de Polignac number, because 512393993 - 2⁶ = 512393929 is a prime.

It is not a weakly prime, because it can be changed into another prime (512393093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256196996 + 256196997.

It is an arithmetic number, because the mean of its divisors is an integer number (256196997).

Almost surely, 2^512393993 is an apocalyptic number.

It is an amenable number.

512393993 is a deficient number, since it is larger than the sum of its proper divisors (1).

512393993 is an equidigital number, since it uses as much as digits as its factorization.

512393993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 196830, while the sum is 44.

The square root of 512393993 is about 22636.1214213036. The cubic root of 512393993 is about 800.2051520738.

The spelling of 512393993 in words is "five hundred twelve million, three hundred ninety-three thousand, nine hundred ninety-three".