40541947 has 2 divisors, whose sum is σ = 40541948. Its totient is φ = 40541946.

The previous prime is 40541929. The next prime is 40541959. The reversal of 40541947 is 74914504.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40541947 is a prime.

It is not a weakly prime, because it can be changed into another prime (40541927) 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, 20270973 + 20270974.

It is an arithmetic number, because the mean of its divisors is an integer number (20270974).

Almost surely, 2^40541947 is an apocalyptic number.

40541947 is a deficient number, since it is larger than the sum of its proper divisors (1).

40541947 is an equidigital number, since it uses as much as digits as its factorization.

40541947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 40541947 is about 6367.2558453387. The cubic root of 40541947 is about 343.5327931616.

The spelling of 40541947 in words is "forty million, five hundred forty-one thousand, nine hundred forty-seven".