406432223 has 2 divisors, whose sum is σ = 406432224. Its totient is φ = 406432222.

The previous prime is 406432207. The next prime is 406432237. The reversal of 406432223 is 322234604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 406432223 - 2⁴ = 406432207 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 406432192 and 406432201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406432253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203216111 + 203216112.

It is an arithmetic number, because the mean of its divisors is an integer number (203216112).

Almost surely, 2^406432223 is an apocalyptic number.

406432223 is a deficient number, since it is larger than the sum of its proper divisors (1).

406432223 is an equidigital number, since it uses as much as digits as its factorization.

406432223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 406432223 is about 20160.1642602435. The cubic root of 406432223 is about 740.7347359176.

Adding to 406432223 its reverse (322234604), we get a palindrome (728666827).

The spelling of 406432223 in words is "four hundred six million, four hundred thirty-two thousand, two hundred twenty-three".