40523893 has 2 divisors, whose sum is σ = 40523894. Its totient is φ = 40523892.

The previous prime is 40523863. The next prime is 40523929. The reversal of 40523893 is 39832504.

It is a happy number.

40523893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26811684 + 13712209 = 5178^2 + 3703^2 .

It is a cyclic number.

It is not a de Polignac number, because 40523893 - 2¹³ = 40515701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40523803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20261946 + 20261947.

It is an arithmetic number, because the mean of its divisors is an integer number (20261947).

Almost surely, 2^40523893 is an apocalyptic number.

It is an amenable number.

40523893 is a deficient number, since it is larger than the sum of its proper divisors (1).

40523893 is an equidigital number, since it uses as much as digits as its factorization.

40523893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 40523893 is about 6365.8379652643. The cubic root of 40523893 is about 343.4817919775.

The spelling of 40523893 in words is "forty million, five hundred twenty-three thousand, eight hundred ninety-three".