40173169 has 2 divisors, whose sum is σ = 40173170. Its totient is φ = 40173168.

The previous prime is 40173167. The next prime is 40173173. The reversal of 40173169 is 96137104.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33350625 + 6822544 = 5775^2 + 2612^2 .

It is a cyclic number.

It is not a de Polignac number, because 40173169 - 2¹ = 40173167 is a prime.

It is a super-2 number, since 2×40173169² = 3227767015005122, which contains 22 as substring.

Together with 40173167, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40173169.

It is not a weakly prime, because it can be changed into another prime (40173167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20086584 + 20086585.

It is an arithmetic number, because the mean of its divisors is an integer number (20086585).

Almost surely, 2^40173169 is an apocalyptic number.

It is an amenable number.

40173169 is a deficient number, since it is larger than the sum of its proper divisors (1).

40173169 is an equidigital number, since it uses as much as digits as its factorization.

40173169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 40173169 is about 6338.2307468252. The cubic root of 40173169 is about 342.4880035580.

The spelling of 40173169 in words is "forty million, one hundred seventy-three thousand, one hundred sixty-nine".