43071139 has 8 divisors (see below), whose sum is σ = 43992720. Its totient is φ = 42153696.

The previous prime is 43071131. The next prime is 43071143. The reversal of 43071139 is 93117034.

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 43071139 - 2³ = 43071131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43071131) 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, 28792 + ... + 30250.

It is an arithmetic number, because the mean of its divisors is an integer number (5499090).

Almost surely, 2^43071139 is an apocalyptic number.

43071139 is a deficient number, since it is larger than the sum of its proper divisors (921581).

43071139 is a wasteful number, since it uses less digits than its factorization.

43071139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 43071139 is about 6562.8605805700. The cubic root of 43071139 is about 350.5328997752.

The spelling of 43071139 in words is "forty-three million, seventy-one thousand, one hundred thirty-nine".