828096391 has 4 divisors (see below), whose sum is σ = 828506952. Its totient is φ = 827685832.

The previous prime is 828096383. The next prime is 828096403. The reversal of 828096391 is 193690828.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 828096391 - 2³ = 828096383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828096491) 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 in 3 ways as a sum of consecutive naturals, for example, 202240 + ... + 206293.

It is an arithmetic number, because the mean of its divisors is an integer number (207126738).

Almost surely, 2^828096391 is an apocalyptic number.

828096391 is a deficient number, since it is larger than the sum of its proper divisors (410561).

828096391 is a wasteful number, since it uses less digits than its factorization.

828096391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410560.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 828096391 is about 28776.6640005404. The cubic root of 828096391 is about 939.0606244857.

The spelling of 828096391 in words is "eight hundred twenty-eight million, ninety-six thousand, three hundred ninety-one".