212008439 has 2 divisors, whose sum is σ = 212008440. Its totient is φ = 212008438.

The previous prime is 212008421. The next prime is 212008451. The reversal of 212008439 is 934800212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212008439 - 2¹⁶ = 211942903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212008939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106004219 + 106004220.

It is an arithmetic number, because the mean of its divisors is an integer number (106004220).

Almost surely, 2^212008439 is an apocalyptic number.

212008439 is a deficient number, since it is larger than the sum of its proper divisors (1).

212008439 is an equidigital number, since it uses as much as digits as its factorization.

212008439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 212008439 is about 14560.5095721269. The cubic root of 212008439 is about 596.2811075397.

The spelling of 212008439 in words is "two hundred twelve million, eight thousand, four hundred thirty-nine".