40247047 has 2 divisors, whose sum is σ = 40247048. Its totient is φ = 40247046.

The previous prime is 40246991. The next prime is 40247057. The reversal of 40247047 is 74074204.

40247047 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 40247047 - 2²³ = 31858439 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 (40247057) 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, 20123523 + 20123524.

It is an arithmetic number, because the mean of its divisors is an integer number (20123524).

Almost surely, 2^40247047 is an apocalyptic number.

40247047 is a deficient number, since it is larger than the sum of its proper divisors (1).

40247047 is an equidigital number, since it uses as much as digits as its factorization.

40247047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 40247047 is about 6344.0560369530. The cubic root of 40247047 is about 342.6978188398.

The spelling of 40247047 in words is "forty million, two hundred forty-seven thousand, forty-seven".