40717321 has 2 divisors, whose sum is σ = 40717322. Its totient is φ = 40717320.

The previous prime is 40717297. The next prime is 40717333. The reversal of 40717321 is 12371704.

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., 38192400 + 2524921 = 6180^2 + 1589^2 .

It is a cyclic number.

It is not a de Polignac number, because 40717321 - 2¹¹ = 40715273 is a prime.

It is not a weakly prime, because it can be changed into another prime (40717381) 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, 20358660 + 20358661.

It is an arithmetic number, because the mean of its divisors is an integer number (20358661).

Almost surely, 2^40717321 is an apocalyptic number.

It is an amenable number.

40717321 is a deficient number, since it is larger than the sum of its proper divisors (1).

40717321 is an equidigital number, since it uses as much as digits as its factorization.

40717321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 40717321 is about 6381.0125372076. The cubic root of 40717321 is about 344.0274253644.

The spelling of 40717321 in words is "forty million, seven hundred seventeen thousand, three hundred twenty-one".