28779299 has 2 divisors, whose sum is σ = 28779300. Its totient is φ = 28779298.

The previous prime is 28779293. The next prime is 28779313. The reversal of 28779299 is 99297782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28779299 - 2⁸ = 28779043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28779299.

It is not a weakly prime, because it can be changed into another prime (28779293) 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 as a sum of consecutive naturals, namely, 14389649 + 14389650.

It is an arithmetic number, because the mean of its divisors is an integer number (14389650).

Almost surely, 2^28779299 is an apocalyptic number.

28779299 is a deficient number, since it is larger than the sum of its proper divisors (1).

28779299 is an equidigital number, since it uses as much as digits as its factorization.

28779299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 53.

The square root of 28779299 is about 5364.6340974944. The cubic root of 28779299 is about 306.4503138192.

The spelling of 28779299 in words is "twenty-eight million, seven hundred seventy-nine thousand, two hundred ninety-nine".