40968791 has 2 divisors, whose sum is σ = 40968792. Its totient is φ = 40968790.

The previous prime is 40968779. The next prime is 40968817. The reversal of 40968791 is 19786904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40968791 - 2¹⁰ = 40967767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40968751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20484395 + 20484396.

It is an arithmetic number, because the mean of its divisors is an integer number (20484396).

Almost surely, 2^40968791 is an apocalyptic number.

40968791 is a deficient number, since it is larger than the sum of its proper divisors (1).

40968791 is an equidigital number, since it uses as much as digits as its factorization.

40968791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 40968791 is about 6400.6867600282. The cubic root of 40968791 is about 344.7342096246.

The spelling of 40968791 in words is "forty million, nine hundred sixty-eight thousand, seven hundred ninety-one".