4432947139 has 4 divisors (see below), whose sum is σ = 4444343280. Its totient is φ = 4421551000.

The previous prime is 4432947061. The next prime is 4432947143. The reversal of 4432947139 is 9317492344.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4432947139 - 2²¹ = 4430849987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4432947439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5697487 + ... + 5698264.

It is an arithmetic number, because the mean of its divisors is an integer number (1111085820).

Almost surely, 2^4432947139 is an apocalyptic number.

4432947139 is a deficient number, since it is larger than the sum of its proper divisors (11396141).

4432947139 is a wasteful number, since it uses less digits than its factorization.

4432947139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11396140.

The product of its digits is 653184, while the sum is 46.

The square root of 4432947139 is about 66580.3810367589. The cubic root of 4432947139 is about 1642.7224189376.

The spelling of 4432947139 in words is "four billion, four hundred thirty-two million, nine hundred forty-seven thousand, one hundred thirty-nine".