43889149 has 4 divisors (see below), whose sum is σ = 45304960. Its totient is φ = 42473340.

The previous prime is 43889143. The next prime is 43889179. The reversal of 43889149 is 94198834.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43889149 - 2¹¹ = 43887101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43889099 and 43889108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43889143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707859 + ... + 707920.

It is an arithmetic number, because the mean of its divisors is an integer number (11326240).

Almost surely, 2^43889149 is an apocalyptic number.

It is an amenable number.

43889149 is a deficient number, since it is larger than the sum of its proper divisors (1415811).

43889149 is a wasteful number, since it uses less digits than its factorization.

43889149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415810.

The product of its digits is 248832, while the sum is 46.

The square root of 43889149 is about 6624.8886028370. Note that the first 3 decimals coincide. The cubic root of 43889149 is about 352.7381125130.

The spelling of 43889149 in words is "forty-three million, eight hundred eighty-nine thousand, one hundred forty-nine".