212776793 has 2 divisors, whose sum is σ = 212776794. Its totient is φ = 212776792.

The previous prime is 212776789. The next prime is 212776813. The reversal of 212776793 is 397677212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208167184 + 4609609 = 14428^2 + 2147^2 .

It is a cyclic number.

It is not a de Polignac number, because 212776793 - 2² = 212776789 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (212776493) 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, 106388396 + 106388397.

It is an arithmetic number, because the mean of its divisors is an integer number (106388397).

Almost surely, 2^212776793 is an apocalyptic number.

It is an amenable number.

212776793 is a deficient number, since it is larger than the sum of its proper divisors (1).

212776793 is an equidigital number, since it uses as much as digits as its factorization.

212776793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 222264, while the sum is 44.

The square root of 212776793 is about 14586.8705691111. The cubic root of 212776793 is about 597.0005798576. Note that the first 3 decimals are identical.

The spelling of 212776793 in words is "two hundred twelve million, seven hundred seventy-six thousand, seven hundred ninety-three".