43478149 has 16 divisors (see below), whose sum is σ = 52174080. Its totient is φ = 35703360.

The previous prime is 43478107. The next prime is 43478153. The reversal of 43478149 is 94187434.

43478149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43478149 - 2¹¹ = 43476101 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43478159) 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 15 ways as a sum of consecutive naturals, for example, 3487 + ... + 9955.

It is an arithmetic number, because the mean of its divisors is an integer number (3260880).

Almost surely, 2^43478149 is an apocalyptic number.

It is an amenable number.

43478149 is a deficient number, since it is larger than the sum of its proper divisors (8695931).

43478149 is a wasteful number, since it uses less digits than its factorization.

43478149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6540.

The product of its digits is 96768, while the sum is 40.

The square root of 43478149 is about 6593.7962510226. The cubic root of 43478149 is about 351.6335853320.

The spelling of 43478149 in words is "forty-three million, four hundred seventy-eight thousand, one hundred forty-nine".