409670161 has 2 divisors, whose sum is σ = 409670162. Its totient is φ = 409670160.

The previous prime is 409670147. The next prime is 409670167. The reversal of 409670161 is 161076904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 337420161 + 72250000 = 18369^2 + 8500^2 .

It is a cyclic number.

It is not a de Polignac number, because 409670161 - 2²³ = 401281553 is a prime.

It is not a weakly prime, because it can be changed into another prime (409670167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204835080 + 204835081.

It is an arithmetic number, because the mean of its divisors is an integer number (204835081).

Almost surely, 2^409670161 is an apocalyptic number.

It is an amenable number.

409670161 is a deficient number, since it is larger than the sum of its proper divisors (1).

409670161 is an equidigital number, since it uses as much as digits as its factorization.

409670161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 409670161 is about 20240.3102990048. The cubic root of 409670161 is about 742.6966144095.

The spelling of 409670161 in words is "four hundred nine million, six hundred seventy thousand, one hundred sixty-one".