40660229 has 2 divisors, whose sum is σ = 40660230. Its totient is φ = 40660228.

The previous prime is 40660219. The next prime is 40660237. The reversal of 40660229 is 92206604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29757025 + 10903204 = 5455^2 + 3302^2 .

It is a cyclic number.

It is not a de Polignac number, because 40660229 - 2⁸ = 40659973 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40660219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20330114 + 20330115.

It is an arithmetic number, because the mean of its divisors is an integer number (20330115).

Almost surely, 2^40660229 is an apocalyptic number.

It is an amenable number.

40660229 is a deficient number, since it is larger than the sum of its proper divisors (1).

40660229 is an equidigital number, since it uses as much as digits as its factorization.

40660229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 40660229 is about 6376.5373832512. The cubic root of 40660229 is about 343.8665568818.

The spelling of 40660229 in words is "forty million, six hundred sixty thousand, two hundred twenty-nine".