406198211 has 2 divisors, whose sum is σ = 406198212. Its totient is φ = 406198210.

The previous prime is 406198189. The next prime is 406198213. The reversal of 406198211 is 112891604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 406198211 - 2¹⁸ = 405936067 is a prime.

It is a Sophie Germain prime.

Together with 406198213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (406198213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203099105 + 203099106.

It is an arithmetic number, because the mean of its divisors is an integer number (203099106).

Almost surely, 2^406198211 is an apocalyptic number.

406198211 is a deficient number, since it is larger than the sum of its proper divisors (1).

406198211 is an equidigital number, since it uses as much as digits as its factorization.

406198211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 406198211 is about 20154.3596028254. The cubic root of 406198211 is about 740.5925440292.

The spelling of 406198211 in words is "four hundred six million, one hundred ninety-eight thousand, two hundred eleven".