28436999 has 2 divisors, whose sum is σ = 28437000. Its totient is φ = 28436998.

The previous prime is 28436987. The next prime is 28437001. The reversal of 28436999 is 99963482.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28436999 is a prime.

Together with 28437001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28436909) 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, 14218499 + 14218500.

It is an arithmetic number, because the mean of its divisors is an integer number (14218500).

Almost surely, 2^28436999 is an apocalyptic number.

28436999 is a deficient number, since it is larger than the sum of its proper divisors (1).

28436999 is an equidigital number, since it uses as much as digits as its factorization.

28436999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 50.

The square root of 28436999 is about 5332.6352772339. The cubic root of 28436999 is about 305.2304949412.

The spelling of 28436999 in words is "twenty-eight million, four hundred thirty-six thousand, nine hundred ninety-nine".