40811047 has 2 divisors, whose sum is σ = 40811048. Its totient is φ = 40811046.

The previous prime is 40811011. The next prime is 40811063. The reversal of 40811047 is 74011804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40811047 - 2⁷ = 40810919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40811077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20405523 + 20405524.

It is an arithmetic number, because the mean of its divisors is an integer number (20405524).

Almost surely, 2^40811047 is an apocalyptic number.

40811047 is a deficient number, since it is larger than the sum of its proper divisors (1).

40811047 is an equidigital number, since it uses as much as digits as its factorization.

40811047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 40811047 is about 6388.3524480104. The cubic root of 40811047 is about 344.2911919427.

The spelling of 40811047 in words is "forty million, eight hundred eleven thousand, forty-seven".