28285979399 has 8 divisors (see below), whose sum is σ = 28711780080. Its totient is φ = 27860285376.

The previous prime is 28285979341. The next prime is 28285979437. The reversal of 28285979399 is 99397958282.

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 28285979399 - 2³² = 23991012103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28285976399) 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, 627377 + ... + 670949.

It is an arithmetic number, because the mean of its divisors is an integer number (3588972510).

Almost surely, 2^28285979399 is an apocalyptic number.

28285979399 is a deficient number, since it is larger than the sum of its proper divisors (425800681).

28285979399 is an equidigital number, since it uses as much as digits as its factorization.

28285979399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53329.

The product of its digits is 176359680, while the sum is 71.

The spelling of 28285979399 in words is "twenty-eight billion, two hundred eighty-five million, nine hundred seventy-nine thousand, three hundred ninety-nine".