40656823 has 2 divisors, whose sum is σ = 40656824. Its totient is φ = 40656822.

The previous prime is 40656817. The next prime is 40656829. The reversal of 40656823 is 32865604.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (40656817) and next prime (40656829).

It is a cyclic number.

It is not a de Polignac number, because 40656823 - 2⁹ = 40656311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40656829) 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, 20328411 + 20328412.

It is an arithmetic number, because the mean of its divisors is an integer number (20328412).

Almost surely, 2^40656823 is an apocalyptic number.

40656823 is a deficient number, since it is larger than the sum of its proper divisors (1).

40656823 is an equidigital number, since it uses as much as digits as its factorization.

40656823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 40656823 is about 6376.2703048099. The cubic root of 40656823 is about 343.8569550159.

The spelling of 40656823 in words is "forty million, six hundred fifty-six thousand, eight hundred twenty-three".