43220029 has 2 divisors, whose sum is σ = 43220030. Its totient is φ = 43220028.

The previous prime is 43220017. The next prime is 43220039. The reversal of 43220029 is 92002234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42968025 + 252004 = 6555^2 + 502^2 .

It is a cyclic number.

It is not a de Polignac number, because 43220029 - 2⁵ = 43219997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43219991 and 43220009.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43220039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21610014 + 21610015.

It is an arithmetic number, because the mean of its divisors is an integer number (21610015).

Almost surely, 2^43220029 is an apocalyptic number.

It is an amenable number.

43220029 is a deficient number, since it is larger than the sum of its proper divisors (1).

43220029 is an equidigital number, since it uses as much as digits as its factorization.

43220029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 43220029 is about 6574.1941711513. The cubic root of 43220029 is about 350.9363471991.

The spelling of 43220029 in words is "forty-three million, two hundred twenty thousand, twenty-nine".