43604149 has 2 divisors, whose sum is σ = 43604150. Its totient is φ = 43604148.

The previous prime is 43604147. The next prime is 43604179. The reversal of 43604149 is 94140634.

43604149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36687249 + 6916900 = 6057^2 + 2630^2 .

It is a cyclic number.

It is not a de Polignac number, because 43604149 - 2¹ = 43604147 is a prime.

Together with 43604147, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43604149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43604147) 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, 21802074 + 21802075.

It is an arithmetic number, because the mean of its divisors is an integer number (21802075).

Almost surely, 2^43604149 is an apocalyptic number.

It is an amenable number.

43604149 is a deficient number, since it is larger than the sum of its proper divisors (1).

43604149 is an equidigital number, since it uses as much as digits as its factorization.

43604149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 43604149 is about 6603.3437741799. The cubic root of 43604149 is about 351.9729366461.

The spelling of 43604149 in words is "forty-three million, six hundred four thousand, one hundred forty-nine".