43216139 has 8 divisors (see below), whose sum is σ = 45278208. Its totient is φ = 41195880.

The previous prime is 43216133. The next prime is 43216163. The reversal of 43216139 is 93161234.

43216139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 43216139 - 2⁸ = 43215883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43216133) 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 in 7 ways as a sum of consecutive naturals, for example, 8327 + ... + 12480.

It is an arithmetic number, because the mean of its divisors is an integer number (5659776).

Almost surely, 2^43216139 is an apocalyptic number.

43216139 is a deficient number, since it is larger than the sum of its proper divisors (2062069).

43216139 is a wasteful number, since it uses less digits than its factorization.

43216139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20905.

The product of its digits is 3888, while the sum is 29.

The square root of 43216139 is about 6573.8983107438. The cubic root of 43216139 is about 350.9258182586.

The spelling of 43216139 in words is "forty-three million, two hundred sixteen thousand, one hundred thirty-nine".