212947249 has 2 divisors, whose sum is σ = 212947250. Its totient is φ = 212947248.

The previous prime is 212947243. The next prime is 212947331. The reversal of 212947249 is 942749212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200732224 + 12215025 = 14168^2 + 3495^2 .

It is a cyclic number.

It is not a de Polignac number, because 212947249 - 2⁷ = 212947121 is a prime.

It is not a weakly prime, because it can be changed into another prime (212947243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106473624 + 106473625.

It is an arithmetic number, because the mean of its divisors is an integer number (106473625).

Almost surely, 2^212947249 is an apocalyptic number.

It is an amenable number.

212947249 is a deficient number, since it is larger than the sum of its proper divisors (1).

212947249 is an equidigital number, since it uses as much as digits as its factorization.

212947249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 212947249 is about 14592.7121879382. The cubic root of 212947249 is about 597.1599568390.

The spelling of 212947249 in words is "two hundred twelve million, nine hundred forty-seven thousand, two hundred forty-nine".