28790899 has 2 divisors, whose sum is σ = 28790900. Its totient is φ = 28790898.

The previous prime is 28790893. The next prime is 28790903. The reversal of 28790899 is 99809782.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28790899 is a prime.

It is not a weakly prime, because it can be changed into another prime (28790893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14395449 + 14395450.

It is an arithmetic number, because the mean of its divisors is an integer number (14395450).

Almost surely, 2^28790899 is an apocalyptic number.

28790899 is a deficient number, since it is larger than the sum of its proper divisors (1).

28790899 is an equidigital number, since it uses as much as digits as its factorization.

28790899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 52.

The square root of 28790899 is about 5365.7151433896. The cubic root of 28790899 is about 306.4914816755.

The spelling of 28790899 in words is "twenty-eight million, seven hundred ninety thousand, eight hundred ninety-nine".