212924791 has 2 divisors, whose sum is σ = 212924792. Its totient is φ = 212924790.

The previous prime is 212924749. The next prime is 212924801. The reversal of 212924791 is 197429212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212924791 - 2¹⁵ = 212892023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212924791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212924291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106462395 + 106462396.

It is an arithmetic number, because the mean of its divisors is an integer number (106462396).

Almost surely, 2^212924791 is an apocalyptic number.

212924791 is a deficient number, since it is larger than the sum of its proper divisors (1).

212924791 is an equidigital number, since it uses as much as digits as its factorization.

212924791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The square root of 212924791 is about 14591.9426739554. The cubic root of 212924791 is about 597.1389633928.

The spelling of 212924791 in words is "two hundred twelve million, nine hundred twenty-four thousand, seven hundred ninety-one".