206912249 has 2 divisors, whose sum is σ = 206912250. Its totient is φ = 206912248.

The previous prime is 206912243. The next prime is 206912257. The reversal of 206912249 is 942219602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152078224 + 54834025 = 12332^2 + 7405^2 .

It is a cyclic number.

It is not a de Polignac number, because 206912249 - 2¹² = 206908153 is a prime.

It is not a weakly prime, because it can be changed into another prime (206912243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103456124 + 103456125.

It is an arithmetic number, because the mean of its divisors is an integer number (103456125).

Almost surely, 2^206912249 is an apocalyptic number.

It is an amenable number.

206912249 is a deficient number, since it is larger than the sum of its proper divisors (1).

206912249 is an equidigital number, since it uses as much as digits as its factorization.

206912249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 206912249 is about 14384.4446886211. Note that the first 3 decimals coincide. The cubic root of 206912249 is about 591.4645688747.

The spelling of 206912249 in words is "two hundred six million, nine hundred twelve thousand, two hundred forty-nine".