212630459 has 2 divisors, whose sum is σ = 212630460. Its totient is φ = 212630458.

The previous prime is 212630401. The next prime is 212630461. The reversal of 212630459 is 954036212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212630459 is a prime.

It is a Sophie Germain prime.

Together with 212630461, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212630359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106315229 + 106315230.

It is an arithmetic number, because the mean of its divisors is an integer number (106315230).

Almost surely, 2^212630459 is an apocalyptic number.

212630459 is a deficient number, since it is larger than the sum of its proper divisors (1).

212630459 is an equidigital number, since it uses as much as digits as its factorization.

212630459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 212630459 is about 14581.8537573245. The cubic root of 212630459 is about 596.8636891180.

The spelling of 212630459 in words is "two hundred twelve million, six hundred thirty thousand, four hundred fifty-nine".