843149201 has 2 divisors, whose sum is σ = 843149202. Its totient is φ = 843149200.

The previous prime is 843149179. The next prime is 843149213. The reversal of 843149201 is 102941348.

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., 432681601 + 410467600 = 20801^2 + 20260^2 .

It is a cyclic number.

It is not a de Polignac number, because 843149201 - 2¹⁴ = 843132817 is a prime.

It is not a weakly prime, because it can be changed into another prime (843149231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421574600 + 421574601.

It is an arithmetic number, because the mean of its divisors is an integer number (421574601).

Almost surely, 2^843149201 is an apocalyptic number.

It is an amenable number.

843149201 is a deficient number, since it is larger than the sum of its proper divisors (1).

843149201 is an equidigital number, since it uses as much as digits as its factorization.

843149201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 843149201 is about 29037.0315459415. The cubic root of 843149201 is about 944.7164499265.

The spelling of 843149201 in words is "eight hundred forty-three million, one hundred forty-nine thousand, two hundred one".