216752849 has 2 divisors, whose sum is σ = 216752850. Its totient is φ = 216752848.

The previous prime is 216752821. The next prime is 216752863. The reversal of 216752849 is 948257612.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175085824 + 41667025 = 13232^2 + 6455^2 .

It is a cyclic number.

It is not a de Polignac number, because 216752849 - 2⁸ = 216752593 is a prime.

It is not a weakly prime, because it can be changed into another prime (216752449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108376424 + 108376425.

It is an arithmetic number, because the mean of its divisors is an integer number (108376425).

Almost surely, 2^216752849 is an apocalyptic number.

It is an amenable number.

216752849 is a deficient number, since it is larger than the sum of its proper divisors (1).

216752849 is an equidigital number, since it uses as much as digits as its factorization.

216752849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The square root of 216752849 is about 14722.5286211303. The cubic root of 216752849 is about 600.6962740988.

The spelling of 216752849 in words is "two hundred sixteen million, seven hundred fifty-two thousand, eight hundred forty-nine".