212344439 has 2 divisors, whose sum is σ = 212344440. Its totient is φ = 212344438.

The previous prime is 212344423. The next prime is 212344459. The reversal of 212344439 is 934443212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212344439 - 2⁴ = 212344423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212344459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106172219 + 106172220.

It is an arithmetic number, because the mean of its divisors is an integer number (106172220).

Almost surely, 2^212344439 is an apocalyptic number.

212344439 is a deficient number, since it is larger than the sum of its proper divisors (1).

212344439 is an equidigital number, since it uses as much as digits as its factorization.

212344439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 32.

The square root of 212344439 is about 14572.0430619732. The cubic root of 212344439 is about 596.5959451704.

The spelling of 212344439 in words is "two hundred twelve million, three hundred forty-four thousand, four hundred thirty-nine".