40705229 has 2 divisors, whose sum is σ = 40705230. Its totient is φ = 40705228.

The previous prime is 40705213. The next prime is 40705283. The reversal of 40705229 is 92250704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39715204 + 990025 = 6302^2 + 995^2 .

It is a cyclic number.

It is not a de Polignac number, because 40705229 - 2⁴ = 40705213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40705289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20352614 + 20352615.

It is an arithmetic number, because the mean of its divisors is an integer number (20352615).

Almost surely, 2^40705229 is an apocalyptic number.

It is an amenable number.

40705229 is a deficient number, since it is larger than the sum of its proper divisors (1).

40705229 is an equidigital number, since it uses as much as digits as its factorization.

40705229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 40705229 is about 6380.0649683212. The cubic root of 40705229 is about 343.9933662187.

The spelling of 40705229 in words is "forty million, seven hundred five thousand, two hundred twenty-nine".