43482139 has 4 divisors (see below), whose sum is σ = 43566120. Its totient is φ = 43398160.

The previous prime is 43482137. The next prime is 43482151. The reversal of 43482139 is 93128434.

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

It is a cyclic number.

It is not a de Polignac number, because 43482139 - 2¹ = 43482137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43482137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41209 + ... + 42250.

It is an arithmetic number, because the mean of its divisors is an integer number (10891530).

Almost surely, 2^43482139 is an apocalyptic number.

43482139 is a deficient number, since it is larger than the sum of its proper divisors (83981).

43482139 is an equidigital number, since it uses as much as digits as its factorization.

43482139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83980.

The product of its digits is 20736, while the sum is 34.

The square root of 43482139 is about 6594.0988012010. The cubic root of 43482139 is about 351.6443415021.

The spelling of 43482139 in words is "forty-three million, four hundred eighty-two thousand, one hundred thirty-nine".