28239893299 has 2 divisors, whose sum is σ = 28239893300. Its totient is φ = 28239893298.

The previous prime is 28239893257. The next prime is 28239893333. The reversal of 28239893299 is 99239893282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28239893299 - 2⁹ = 28239892787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28239893299.

It is not a weakly prime, because it can be changed into another prime (28239893599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14119946649 + 14119946650.

It is an arithmetic number, because the mean of its divisors is an integer number (14119946650).

Almost surely, 2^28239893299 is an apocalyptic number.

28239893299 is a deficient number, since it is larger than the sum of its proper divisors (1).

28239893299 is an equidigital number, since it uses as much as digits as its factorization.

28239893299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30233088, while the sum is 64.

The spelling of 28239893299 in words is "twenty-eight billion, two hundred thirty-nine million, eight hundred ninety-three thousand, two hundred ninety-nine".