406682173 has 2 divisors, whose sum is σ = 406682174. Its totient is φ = 406682172.

The previous prime is 406682147. The next prime is 406682179. The reversal of 406682173 is 371286604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391921209 + 14760964 = 19797^2 + 3842^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406682173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406682179) 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, 203341086 + 203341087.

It is an arithmetic number, because the mean of its divisors is an integer number (203341087).

Almost surely, 2^406682173 is an apocalyptic number.

It is an amenable number.

406682173 is a deficient number, since it is larger than the sum of its proper divisors (1).

406682173 is an equidigital number, since it uses as much as digits as its factorization.

406682173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 406682173 is about 20166.3624136828. The cubic root of 406682173 is about 740.8865518872.

The spelling of 406682173 in words is "four hundred six million, six hundred eighty-two thousand, one hundred seventy-three".