40873823 has 2 divisors, whose sum is σ = 40873824. Its totient is φ = 40873822.

The previous prime is 40873787. The next prime is 40873849. The reversal of 40873823 is 32837804.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40873823 is a prime.

It is equal to p_2483639 and since 40873823 and 2483639 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40873853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20436911 + 20436912.

It is an arithmetic number, because the mean of its divisors is an integer number (20436912).

Almost surely, 2^40873823 is an apocalyptic number.

40873823 is a deficient number, since it is larger than the sum of its proper divisors (1).

40873823 is an equidigital number, since it uses as much as digits as its factorization.

40873823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 40873823 is about 6393.2638769255. The cubic root of 40873823 is about 344.4676323350.

The spelling of 40873823 in words is "forty million, eight hundred seventy-three thousand, eight hundred twenty-three".