828321899 has 2 divisors, whose sum is σ = 828321900. Its totient is φ = 828321898.

The previous prime is 828321887. The next prime is 828321947. The reversal of 828321899 is 998123828.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 828321899 - 2¹² = 828317803 is a prime.

It is a super-2 number, since 2×828321899² = 1372234336725932402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (828321859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414160949 + 414160950.

It is an arithmetic number, because the mean of its divisors is an integer number (414160950).

Almost surely, 2^828321899 is an apocalyptic number.

828321899 is a deficient number, since it is larger than the sum of its proper divisors (1).

828321899 is an equidigital number, since it uses as much as digits as its factorization.

828321899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 50.

The square root of 828321899 is about 28780.5819781324. The cubic root of 828321899 is about 939.1458587111.

The spelling of 828321899 in words is "eight hundred twenty-eight million, three hundred twenty-one thousand, eight hundred ninety-nine".