28939350489 has 8 divisors (see below), whose sum is σ = 44098057920. Its totient is φ = 16536771696.

The previous prime is 28939350481. The next prime is 28939350541. The reversal of 28939350489 is 98405393982.

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

It is not a de Polignac number, because 28939350489 - 2³ = 28939350481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28939350481) 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, 689032134 + ... + 689032175.

It is an arithmetic number, because the mean of its divisors is an integer number (5512257240).

Almost surely, 2^28939350489 is an apocalyptic number.

It is an amenable number.

28939350489 is a deficient number, since it is larger than the sum of its proper divisors (15158707431).

28939350489 is a wasteful number, since it uses less digits than its factorization.

28939350489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378064319.

The product of its (nonzero) digits is 16796160, while the sum is 60.

The spelling of 28939350489 in words is "twenty-eight billion, nine hundred thirty-nine million, three hundred fifty thousand, four hundred eighty-nine".