40224229 has 2 divisors, whose sum is σ = 40224230. Its totient is φ = 40224228.

The previous prime is 40224211. The next prime is 40224257. The reversal of 40224229 is 92242204.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38415204 + 1809025 = 6198^2 + 1345^2 .

It is a cyclic number.

It is not a de Polignac number, because 40224229 - 2⁷ = 40224101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40224209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20112114 + 20112115.

It is an arithmetic number, because the mean of its divisors is an integer number (20112115).

Almost surely, 2^40224229 is an apocalyptic number.

It is an amenable number.

40224229 is a deficient number, since it is larger than the sum of its proper divisors (1).

40224229 is an equidigital number, since it uses as much as digits as its factorization.

40224229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 40224229 is about 6342.2574056877. The cubic root of 40224229 is about 342.6330426002.

The spelling of 40224229 in words is "forty million, two hundred twenty-four thousand, two hundred twenty-nine".