4432638549 has 8 divisors (see below), whose sum is σ = 5911021312. Its totient is φ = 2954674080.

The previous prime is 4432638541. The next prime is 4432638577. The reversal of 4432638549 is 9458362344.

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

It is not a de Polignac number, because 4432638549 - 2³ = 4432638541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4432638498 and 4432638507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4432638541) 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 7 ways as a sum of consecutive naturals, for example, 78949 + ... + 122874.

It is an arithmetic number, because the mean of its divisors is an integer number (738877664).

Almost surely, 2^4432638549 is an apocalyptic number.

It is an amenable number.

4432638549 is a deficient number, since it is larger than the sum of its proper divisors (1478382763).

4432638549 is a wasteful number, since it uses less digits than its factorization.

4432638549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209147.

The product of its digits is 2488320, while the sum is 48.

The square root of 4432638549 is about 66578.0635720205. The cubic root of 4432638549 is about 1642.6842998670.

The spelling of 4432638549 in words is "four billion, four hundred thirty-two million, six hundred thirty-eight thousand, five hundred forty-nine".