43839542 has 4 divisors (see below), whose sum is σ = 65759316. Its totient is φ = 21919770.

The previous prime is 43839529. The next prime is 43839547. The reversal of 43839542 is 24593834.

43839542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 43839496 and 43839505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43839547) 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 as a sum of consecutive naturals, namely, 10959884 + ... + 10959887.

It is an arithmetic number, because the mean of its divisors is an integer number (16439829).

Almost surely, 2^43839542 is an apocalyptic number.

43839542 is a deficient number, since it is larger than the sum of its proper divisors (21919774).

43839542 is a wasteful number, since it uses less digits than its factorization.

43839542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21919773.

The product of its digits is 103680, while the sum is 38.

The square root of 43839542 is about 6621.1435568186. The cubic root of 43839542 is about 352.6051648730.

The spelling of 43839542 in words is "forty-three million, eight hundred thirty-nine thousand, five hundred forty-two".