43798139 has 8 divisors (see below), whose sum is σ = 54605568. Its totient is φ = 34128360.

The previous prime is 43798129. The next prime is 43798151. The reversal of 43798139 is 93189734.

It is a happy number.

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

It is not a de Polignac number, because 43798139 - 2¹⁶ = 43732603 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43798139.

It is not an unprimeable number, because it can be changed into a prime (43798129) 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, 284327 + ... + 284480.

It is an arithmetic number, because the mean of its divisors is an integer number (6825696).

Almost surely, 2^43798139 is an apocalyptic number.

43798139 is a deficient number, since it is larger than the sum of its proper divisors (10807429).

43798139 is a wasteful number, since it uses less digits than its factorization.

43798139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568825.

The product of its digits is 163296, while the sum is 44.

The square root of 43798139 is about 6618.0162435582. The cubic root of 43798139 is about 352.4941272935.

The spelling of 43798139 in words is "forty-three million, seven hundred ninety-eight thousand, one hundred thirty-nine".