40566923 has 2 divisors, whose sum is σ = 40566924. Its totient is φ = 40566922.

The previous prime is 40566893. The next prime is 40566937. The reversal of 40566923 is 32966504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40566923 - 2¹² = 40562827 is a prime.

It is not a weakly prime, because it can be changed into another prime (40566973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20283461 + 20283462.

It is an arithmetic number, because the mean of its divisors is an integer number (20283462).

Almost surely, 2^40566923 is an apocalyptic number.

40566923 is a deficient number, since it is larger than the sum of its proper divisors (1).

40566923 is an equidigital number, since it uses as much as digits as its factorization.

40566923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 40566923 is about 6369.2168278368. The cubic root of 40566923 is about 343.6033235164.

The spelling of 40566923 in words is "forty million, five hundred sixty-six thousand, nine hundred twenty-three".