40667717 has 2 divisors, whose sum is σ = 40667718. Its totient is φ = 40667716.

The previous prime is 40667687. The next prime is 40667729. The reversal of 40667717 is 71776604.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30625156 + 10042561 = 5534^2 + 3169^2 .

It is a cyclic number.

It is not a de Polignac number, because 40667717 - 2²⁴ = 23890501 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 (40667747) 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, 20333858 + 20333859.

It is an arithmetic number, because the mean of its divisors is an integer number (20333859).

Almost surely, 2^40667717 is an apocalyptic number.

It is an amenable number.

40667717 is a deficient number, since it is larger than the sum of its proper divisors (1).

40667717 is an equidigital number, since it uses as much as digits as its factorization.

40667717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 40667717 is about 6377.1245087422. The cubic root of 40667717 is about 343.8876644423.

The spelling of 40667717 in words is "forty million, six hundred sixty-seven thousand, seven hundred seventeen".