43616139 has 16 divisors (see below), whose sum is σ = 66601728. Its totient is φ = 24871392.

The previous prime is 43616117. The next prime is 43616149. The reversal of 43616139 is 93161634.

43616139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43616139 - 2⁵ = 43616107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43616149) 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 15 ways as a sum of consecutive naturals, for example, 9589 + ... + 13385.

It is an arithmetic number, because the mean of its divisors is an integer number (4162608).

Almost surely, 2^43616139 is an apocalyptic number.

43616139 is a deficient number, since it is larger than the sum of its proper divisors (22985589).

43616139 is a wasteful number, since it uses less digits than its factorization.

43616139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4354.

The product of its digits is 11664, while the sum is 33.

The square root of 43616139 is about 6604.2515851533. The cubic root of 43616139 is about 352.0051948054.

The spelling of 43616139 in words is "forty-three million, six hundred sixteen thousand, one hundred thirty-nine".