1028855499 has 12 divisors (see below), whose sum is σ = 1595776104. Its totient is φ = 587917344.

The previous prime is 1028855483. The next prime is 1028855501. The reversal of 1028855499 is 9945588201.

It is not a de Polignac number, because 1028855499 - 2⁴ = 1028855483 is a prime.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1028855459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3499362 + ... + 3499655.

It is an arithmetic number, because the mean of its divisors is an integer number (132981342).

Almost surely, 2^1028855499 is an apocalyptic number.

1028855499 is a deficient number, since it is larger than the sum of its proper divisors (566920605).

1028855499 is an equidigital number, since it uses as much as digits as its factorization.

1028855499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6999034 (or 6999027 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 51.

The square root of 1028855499 is about 32075.7774496582. Note that the first 3 decimals coincide. The cubic root of 1028855499 is about 1009.5274392920.

The spelling of 1028855499 in words is "one billion, twenty-eight million, eight hundred fifty-five thousand, four hundred ninety-nine".