43321149 has 20 divisors (see below), whose sum is σ = 65300796. Its totient is φ = 28619136.

The previous prime is 43321139. The next prime is 43321153. The reversal of 43321149 is 94112334.

43321149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3404025 + 39917124 = 1845^2 + 6318^2 .

It is not a de Polignac number, because 43321149 - 2⁹ = 43320637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43321129) 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 in 19 ways as a sum of consecutive naturals, for example, 6787 + ... + 11519.

Almost surely, 2^43321149 is an apocalyptic number.

It is an amenable number.

43321149 is a deficient number, since it is larger than the sum of its proper divisors (21979647).

43321149 is a wasteful number, since it uses less digits than its factorization.

43321149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4858 (or 4849 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 43321149 is about 6581.8803544276. The cubic root of 43321149 is about 351.2098241389.

The spelling of 43321149 in words is "forty-three million, three hundred twenty-one thousand, one hundred forty-nine".