212967947 has 2 divisors, whose sum is σ = 212967948. Its totient is φ = 212967946.

The previous prime is 212967917. The next prime is 212967961. The reversal of 212967947 is 749769212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212967947 - 2⁶ = 212967883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212967917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106483973 + 106483974.

It is an arithmetic number, because the mean of its divisors is an integer number (106483974).

Almost surely, 2^212967947 is an apocalyptic number.

212967947 is a deficient number, since it is larger than the sum of its proper divisors (1).

212967947 is an equidigital number, since it uses as much as digits as its factorization.

212967947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 47.

The square root of 212967947 is about 14593.4213603253. The cubic root of 212967947 is about 597.1793037530.

The spelling of 212967947 in words is "two hundred twelve million, nine hundred sixty-seven thousand, nine hundred forty-seven".