212965393 has 2 divisors, whose sum is σ = 212965394. Its totient is φ = 212965392.

The previous prime is 212965387. The next prime is 212965453. The reversal of 212965393 is 393569212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193543744 + 19421649 = 13912^2 + 4407^2 .

It is a cyclic number.

It is not a de Polignac number, because 212965393 - 2⁹ = 212964881 is a prime.

It is not a weakly prime, because it can be changed into another prime (212965693) 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, 106482696 + 106482697.

It is an arithmetic number, because the mean of its divisors is an integer number (106482697).

Almost surely, 2^212965393 is an apocalyptic number.

It is an amenable number.

212965393 is a deficient number, since it is larger than the sum of its proper divisors (1).

212965393 is an equidigital number, since it uses as much as digits as its factorization.

212965393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 40.

The square root of 212965393 is about 14593.3338548805. Note that the first 3 decimals coincide. The cubic root of 212965393 is about 597.1769165361.

The spelling of 212965393 in words is "two hundred twelve million, nine hundred sixty-five thousand, three hundred ninety-three".