212945699 has 2 divisors, whose sum is σ = 212945700. Its totient is φ = 212945698.

The previous prime is 212945687. The next prime is 212945717. The reversal of 212945699 is 996549212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212945699 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212945659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106472849 + 106472850.

It is an arithmetic number, because the mean of its divisors is an integer number (106472850).

Almost surely, 2^212945699 is an apocalyptic number.

212945699 is a deficient number, since it is larger than the sum of its proper divisors (1).

212945699 is an equidigital number, since it uses as much as digits as its factorization.

212945699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 47.

The square root of 212945699 is about 14592.6590791398. The cubic root of 212945699 is about 597.1585079665.

The spelling of 212945699 in words is "two hundred twelve million, nine hundred forty-five thousand, six hundred ninety-nine".