43548989 has 8 divisors (see below), whose sum is σ = 47902080. Its totient is φ = 39588780.

The previous prime is 43548979. The next prime is 43548991. The reversal of 43548989 is 98984534.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-43548989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43548919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15029 + ... + 17690.

It is an arithmetic number, because the mean of its divisors is an integer number (5987760).

Almost surely, 2^43548989 is an apocalyptic number.

It is an amenable number.

43548989 is a deficient number, since it is larger than the sum of its proper divisors (4353091).

43548989 is an equidigital number, since it uses as much as digits as its factorization.

43548989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32752 (or 32730 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 50.

The square root of 43548989 is about 6599.1657806120. The cubic root of 43548989 is about 351.8244567415.

The spelling of 43548989 in words is "forty-three million, five hundred forty-eight thousand, nine hundred eighty-nine".