40056229 has 2 divisors, whose sum is σ = 40056230. Its totient is φ = 40056228.

The previous prime is 40056217. The next prime is 40056253. The reversal of 40056229 is 92265004.

40056229 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., 30228004 + 9828225 = 5498^2 + 3135^2 .

It is a cyclic number.

It is not a de Polignac number, because 40056229 - 2¹⁹ = 39531941 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 40056197 and 40056206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40056629) 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, 20028114 + 20028115.

It is an arithmetic number, because the mean of its divisors is an integer number (20028115).

Almost surely, 2^40056229 is an apocalyptic number.

It is an amenable number.

40056229 is a deficient number, since it is larger than the sum of its proper divisors (1).

40056229 is an equidigital number, since it uses as much as digits as its factorization.

40056229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 40056229 is about 6328.9990519829. Note that the first 3 decimals coincide. The cubic root of 40056229 is about 342.1553647004.

The spelling of 40056229 in words is "forty million, fifty-six thousand, two hundred twenty-nine".