40407173 has 2 divisors, whose sum is σ = 40407174. Its totient is φ = 40407172.

The previous prime is 40407163. The next prime is 40407187. The reversal of 40407173 is 37170404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34656769 + 5750404 = 5887^2 + 2398^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40407173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40407163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20203586 + 20203587.

It is an arithmetic number, because the mean of its divisors is an integer number (20203587).

Almost surely, 2^40407173 is an apocalyptic number.

It is an amenable number.

40407173 is a deficient number, since it is larger than the sum of its proper divisors (1).

40407173 is an equidigital number, since it uses as much as digits as its factorization.

40407173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 40407173 is about 6356.6636689383. The cubic root of 40407173 is about 343.1517007257.

Adding to 40407173 its reverse (37170404), we get a palindrome (77577577).

The spelling of 40407173 in words is "forty million, four hundred seven thousand, one hundred seventy-three".