43389539 has 8 divisors (see below), whose sum is σ = 45059520. Its totient is φ = 41731200.

The previous prime is 43389529. The next prime is 43389571. The reversal of 43389539 is 93598334.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43389539 - 2¹² = 43385443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43389539.

It is not an unprimeable number, because it can be changed into a prime (43389509) 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, 5099 + ... + 10619.

It is an arithmetic number, because the mean of its divisors is an integer number (5632440).

Almost surely, 2^43389539 is an apocalyptic number.

43389539 is a deficient number, since it is larger than the sum of its proper divisors (1669981).

43389539 is a wasteful number, since it uses less digits than its factorization.

43389539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5821.

The product of its digits is 349920, while the sum is 44.

The square root of 43389539 is about 6587.0736294655. The cubic root of 43389539 is about 351.3945423191.

The spelling of 43389539 in words is "forty-three million, three hundred eighty-nine thousand, five hundred thirty-nine".