40540117 has 2 divisors, whose sum is σ = 40540118. Its totient is φ = 40540116.

The previous prime is 40540111. The next prime is 40540127. The reversal of 40540117 is 71104504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40525956 + 14161 = 6366^2 + 119^2 .

It is a cyclic number.

It is not a de Polignac number, because 40540117 - 2³ = 40540109 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40540111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20270058 + 20270059.

It is an arithmetic number, because the mean of its divisors is an integer number (20270059).

Almost surely, 2^40540117 is an apocalyptic number.

It is an amenable number.

40540117 is a deficient number, since it is larger than the sum of its proper divisors (1).

40540117 is an equidigital number, since it uses as much as digits as its factorization.

40540117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 40540117 is about 6367.1121397381. The cubic root of 40540117 is about 343.5276242397.

The spelling of 40540117 in words is "forty million, five hundred forty thousand, one hundred seventeen".