40782947 has 2 divisors, whose sum is σ = 40782948. Its totient is φ = 40782946.

The previous prime is 40782941. The next prime is 40782977. The reversal of 40782947 is 74928704.

40782947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40782947 - 2⁶ = 40782883 is a prime.

It is not a weakly prime, because it can be changed into another prime (40782941) 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, 20391473 + 20391474.

It is an arithmetic number, because the mean of its divisors is an integer number (20391474).

Almost surely, 2^40782947 is an apocalyptic number.

40782947 is a deficient number, since it is larger than the sum of its proper divisors (1).

40782947 is an equidigital number, since it uses as much as digits as its factorization.

40782947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 40782947 is about 6386.1527542019. The cubic root of 40782947 is about 344.2121544884.

The spelling of 40782947 in words is "forty million, seven hundred eighty-two thousand, nine hundred forty-seven".