43039139 has 8 divisors (see below), whose sum is σ = 50563632. Its totient is φ = 36116640.

The previous prime is 43039111. The next prime is 43039151. The reversal of 43039139 is 93193034.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43039139 is a prime.

It is a super-2 number, since 2×43039139² = 3704734971722642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43039109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150344 + ... + 150629.

It is an arithmetic number, because the mean of its divisors is an integer number (6320454).

Almost surely, 2^43039139 is an apocalyptic number.

43039139 is a deficient number, since it is larger than the sum of its proper divisors (7524493).

43039139 is a wasteful number, since it uses less digits than its factorization.

43039139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300997.

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 43039139 is about 6560.4221662939. The cubic root of 43039139 is about 350.4460679885.

The spelling of 43039139 in words is "forty-three million, thirty-nine thousand, one hundred thirty-nine".