40663547 has 2 divisors, whose sum is σ = 40663548. Its totient is φ = 40663546.

The previous prime is 40663543. The next prime is 40663549. The reversal of 40663547 is 74536604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40663547 - 2² = 40663543 is a prime.

Together with 40663549, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40663543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20331773 + 20331774.

It is an arithmetic number, because the mean of its divisors is an integer number (20331774).

Almost surely, 2^40663547 is an apocalyptic number.

40663547 is a deficient number, since it is larger than the sum of its proper divisors (1).

40663547 is an equidigital number, since it uses as much as digits as its factorization.

40663547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 40663547 is about 6376.7975504951. The cubic root of 40663547 is about 343.8759101510.

The spelling of 40663547 in words is "forty million, six hundred sixty-three thousand, five hundred forty-seven".