28969799 has 2 divisors, whose sum is σ = 28969800. Its totient is φ = 28969798.

The previous prime is 28969793. The next prime is 28969807. The reversal of 28969799 is 99796982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28969799 - 2⁴ = 28969783 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28969793) 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, 14484899 + 14484900.

It is an arithmetic number, because the mean of its divisors is an integer number (14484900).

Almost surely, 2^28969799 is an apocalyptic number.

28969799 is a deficient number, since it is larger than the sum of its proper divisors (1).

28969799 is an equidigital number, since it uses as much as digits as its factorization.

28969799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4408992, while the sum is 59.

The square root of 28969799 is about 5382.3599842448. The cubic root of 28969799 is about 307.1249937536.

The spelling of 28969799 in words is "twenty-eight million, nine hundred sixty-nine thousand, seven hundred ninety-nine".