828259987 has 2 divisors, whose sum is σ = 828259988. Its totient is φ = 828259986.

The previous prime is 828259931. The next prime is 828260051. The reversal of 828259987 is 789952828.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 828259987 - 2²⁷ = 694042259 is a prime.

It is not a weakly prime, because it can be changed into another prime (828251987) 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 as a sum of consecutive naturals, namely, 414129993 + 414129994.

It is an arithmetic number, because the mean of its divisors is an integer number (414129994).

Almost surely, 2^828259987 is an apocalyptic number.

828259987 is a deficient number, since it is larger than the sum of its proper divisors (1).

828259987 is an equidigital number, since it uses as much as digits as its factorization.

828259987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5806080, while the sum is 58.

The square root of 828259987 is about 28779.5063717222. The cubic root of 828259987 is about 939.1224596569.

The spelling of 828259987 in words is "eight hundred twenty-eight million, two hundred fifty-nine thousand, nine hundred eighty-seven".