408008173 has 2 divisors, whose sum is σ = 408008174. Its totient is φ = 408008172.

The previous prime is 408008137. The next prime is 408008189. The reversal of 408008173 is 371800804.

It is a happy number.

Together with previous prime (408008137) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207417604 + 200590569 = 14402^2 + 14163^2 .

It is a cyclic number.

It is not a de Polignac number, because 408008173 - 2²⁵ = 374453741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (408008873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204004086 + 204004087.

It is an arithmetic number, because the mean of its divisors is an integer number (204004087).

Almost surely, 2^408008173 is an apocalyptic number.

It is an amenable number.

408008173 is a deficient number, since it is larger than the sum of its proper divisors (1).

408008173 is an equidigital number, since it uses as much as digits as its factorization.

408008173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 408008173 is about 20199.2121876077. The cubic root of 408008173 is about 741.6909062706.

Adding to 408008173 its reverse (371800804), we get a palindrome (779808977).

The spelling of 408008173 in words is "four hundred eight million, eight thousand, one hundred seventy-three".