28793899 has 2 divisors, whose sum is σ = 28793900. Its totient is φ = 28793898.

The previous prime is 28793887. The next prime is 28793917. The reversal of 28793899 is 99839782.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28793899 is a prime.

It is not a weakly prime, because it can be changed into another prime (28793879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14396949 + 14396950.

It is an arithmetic number, because the mean of its divisors is an integer number (14396950).

Almost surely, 2^28793899 is an apocalyptic number.

28793899 is a deficient number, since it is larger than the sum of its proper divisors (1).

28793899 is an equidigital number, since it uses as much as digits as its factorization.

28793899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 55.

The square root of 28793899 is about 5365.9946887786. The cubic root of 28793899 is about 306.5021267351.

It can be divided in two parts, 28793 and 899, that added together give a palindrome (29692).

The spelling of 28793899 in words is "twenty-eight million, seven hundred ninety-three thousand, eight hundred ninety-nine".