40248947 has 2 divisors, whose sum is σ = 40248948. Its totient is φ = 40248946.

The previous prime is 40248917. The next prime is 40248953. The reversal of 40248947 is 74984204.

40248947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40248947 - 2¹⁸ = 39986803 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40248947.

It is not a weakly prime, because it can be changed into another prime (40248907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20124473 + 20124474.

It is an arithmetic number, because the mean of its divisors is an integer number (20124474).

Almost surely, 2^40248947 is an apocalyptic number.

40248947 is a deficient number, since it is larger than the sum of its proper divisors (1).

40248947 is an equidigital number, since it uses as much as digits as its factorization.

40248947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 40248947 is about 6344.2057816562. The cubic root of 40248947 is about 342.7032114972.

The spelling of 40248947 in words is "forty million, two hundred forty-eight thousand, nine hundred forty-seven".