43674409 has 2 divisors, whose sum is σ = 43674410. Its totient is φ = 43674408.

The previous prime is 43674391. The next prime is 43674413. The reversal of 43674409 is 90447634.

43674409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41024025 + 2650384 = 6405^2 + 1628^2 .

It is a cyclic number.

It is not a de Polignac number, because 43674409 - 2¹⁷ = 43543337 is a prime.

It is not a weakly prime, because it can be changed into another prime (43674509) 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, 21837204 + 21837205.

It is an arithmetic number, because the mean of its divisors is an integer number (21837205).

Almost surely, 2^43674409 is an apocalyptic number.

It is an amenable number.

43674409 is a deficient number, since it is larger than the sum of its proper divisors (1).

43674409 is an equidigital number, since it uses as much as digits as its factorization.

43674409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 43674409 is about 6608.6616648154. The cubic root of 43674409 is about 352.1618815712.

The spelling of 43674409 in words is "forty-three million, six hundred seventy-four thousand, four hundred nine".