40537169 has 2 divisors, whose sum is σ = 40537170. Its totient is φ = 40537168.

The previous prime is 40537139. The next prime is 40537177. The reversal of 40537169 is 96173504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37368769 + 3168400 = 6113^2 + 1780^2 .

It is a cyclic number.

It is not a de Polignac number, because 40537169 - 2⁸ = 40536913 is a prime.

It is a super-2 number, since 2×40537169² = 3286524141069122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40537139) 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, 20268584 + 20268585.

It is an arithmetic number, because the mean of its divisors is an integer number (20268585).

Almost surely, 2^40537169 is an apocalyptic number.

It is an amenable number.

40537169 is a deficient number, since it is larger than the sum of its proper divisors (1).

40537169 is an equidigital number, since it uses as much as digits as its factorization.

40537169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 40537169 is about 6366.8806334028. The cubic root of 40537169 is about 343.5192971466.

The spelling of 40537169 in words is "forty million, five hundred thirty-seven thousand, one hundred sixty-nine".