212404459 has 2 divisors, whose sum is σ = 212404460. Its totient is φ = 212404458.

The previous prime is 212404453. The next prime is 212404481. The reversal of 212404459 is 954404212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212404459 - 2¹³ = 212396267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212404459.

It is not a weakly prime, because it can be changed into another prime (212404453) 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, 106202229 + 106202230.

It is an arithmetic number, because the mean of its divisors is an integer number (106202230).

Almost surely, 2^212404459 is an apocalyptic number.

212404459 is a deficient number, since it is larger than the sum of its proper divisors (1).

212404459 is an equidigital number, since it uses as much as digits as its factorization.

212404459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 212404459 is about 14574.1023394239. The cubic root of 212404459 is about 596.6521499473.

The spelling of 212404459 in words is "two hundred twelve million, four hundred four thousand, four hundred fifty-nine".