828865199 has 2 divisors, whose sum is σ = 828865200. Its totient is φ = 828865198.

The previous prime is 828865189. The next prime is 828865223. The reversal of 828865199 is 991568828.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 828865199 - 2²⁸ = 560429743 is a prime.

It is a super-2 number, since 2×828865199² = 1374035036226619202, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (828865109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414432599 + 414432600.

It is an arithmetic number, because the mean of its divisors is an integer number (414432600).

Almost surely, 2^828865199 is an apocalyptic number.

828865199 is a deficient number, since it is larger than the sum of its proper divisors (1).

828865199 is an equidigital number, since it uses as much as digits as its factorization.

828865199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 56.

The square root of 828865199 is about 28790.0190864820. The cubic root of 828865199 is about 939.3511438104.

The spelling of 828865199 in words is "eight hundred twenty-eight million, eight hundred sixty-five thousand, one hundred ninety-nine".