40056013 has 2 divisors, whose sum is σ = 40056014. Its totient is φ = 40056012.

The previous prime is 40056011. The next prime is 40056019. The reversal of 40056013 is 31065004.

40056013 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., 32114889 + 7941124 = 5667^2 + 2818^2 .

It is a cyclic number.

It is not a de Polignac number, because 40056013 - 2¹ = 40056011 is a prime.

Together with 40056011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40056011) 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, 20028006 + 20028007.

It is an arithmetic number, because the mean of its divisors is an integer number (20028007).

Almost surely, 2^40056013 is an apocalyptic number.

It is an amenable number.

40056013 is a deficient number, since it is larger than the sum of its proper divisors (1).

40056013 is an equidigital number, since it uses as much as digits as its factorization.

40056013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 40056013 is about 6328.9819876501. The cubic root of 40056013 is about 342.1547496842.

The spelling of 40056013 in words is "forty million, fifty-six thousand, thirteen".