212706899 has 2 divisors, whose sum is σ = 212706900. Its totient is φ = 212706898.

The previous prime is 212706883. The next prime is 212706917. The reversal of 212706899 is 998607212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212706899 - 2⁴ = 212706883 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212706799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106353449 + 106353450.

It is an arithmetic number, because the mean of its divisors is an integer number (106353450).

Almost surely, 2^212706899 is an apocalyptic number.

212706899 is a deficient number, since it is larger than the sum of its proper divisors (1).

212706899 is an equidigital number, since it uses as much as digits as its factorization.

212706899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 212706899 is about 14584.4745877251. The cubic root of 212706899 is about 596.9352041061.

The spelling of 212706899 in words is "two hundred twelve million, seven hundred six thousand, eight hundred ninety-nine".