406159217 has 2 divisors, whose sum is σ = 406159218. Its totient is φ = 406159216.

The previous prime is 406159213. The next prime is 406159253. The reversal of 406159217 is 712951604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 284630641 + 121528576 = 16871^2 + 11024^2 .

It is a cyclic number.

It is not a de Polignac number, because 406159217 - 2² = 406159213 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (406159213) 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, 203079608 + 203079609.

It is an arithmetic number, because the mean of its divisors is an integer number (203079609).

Almost surely, 2^406159217 is an apocalyptic number.

It is an amenable number.

406159217 is a deficient number, since it is larger than the sum of its proper divisors (1).

406159217 is an equidigital number, since it uses as much as digits as its factorization.

406159217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 406159217 is about 20153.3921958563. The cubic root of 406159217 is about 740.5688449344.

The spelling of 406159217 in words is "four hundred six million, one hundred fifty-nine thousand, two hundred seventeen".