212262839 has 2 divisors, whose sum is σ = 212262840. Its totient is φ = 212262838.

The previous prime is 212262793. The next prime is 212262899. The reversal of 212262839 is 938262212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212262839 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 212262799 and 212262808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212262899) 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, 106131419 + 106131420.

It is an arithmetic number, because the mean of its divisors is an integer number (106131420).

Almost surely, 2^212262839 is an apocalyptic number.

212262839 is a deficient number, since it is larger than the sum of its proper divisors (1).

212262839 is an equidigital number, since it uses as much as digits as its factorization.

212262839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 35.

The square root of 212262839 is about 14569.2429110095. The cubic root of 212262839 is about 596.5195151549.

The spelling of 212262839 in words is "two hundred twelve million, two hundred sixty-two thousand, eight hundred thirty-nine".