212409419 has 2 divisors, whose sum is σ = 212409420. Its totient is φ = 212409418.

The previous prime is 212409401. The next prime is 212409437. The reversal of 212409419 is 914904212.

It is a balanced prime because it is at equal distance from previous prime (212409401) and next prime (212409437).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212409419 is a prime.

It is a super-2 number, since 2×212409419² = 90235522559835122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212409469) 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, 106204709 + 106204710.

It is an arithmetic number, because the mean of its divisors is an integer number (106204710).

Almost surely, 2^212409419 is an apocalyptic number.

212409419 is a deficient number, since it is larger than the sum of its proper divisors (1).

212409419 is an equidigital number, since it uses as much as digits as its factorization.

212409419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 212409419 is about 14574.2725032847. The cubic root of 212409419 is about 596.6567941869.

The spelling of 212409419 in words is "two hundred twelve million, four hundred nine thousand, four hundred nineteen".