828904117 has 4 divisors (see below), whose sum is σ = 830256940. Its totient is φ = 827551296.

The previous prime is 828904073. The next prime is 828904159. The reversal of 828904117 is 711409828.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12716356 + 816187761 = 3566^2 + 28569^2 .

It is a cyclic number.

It is not a de Polignac number, because 828904117 - 2¹¹ = 828902069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 828904117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828904217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 675492 + ... + 676717.

It is an arithmetic number, because the mean of its divisors is an integer number (207564235).

Almost surely, 2^828904117 is an apocalyptic number.

It is an amenable number.

828904117 is a deficient number, since it is larger than the sum of its proper divisors (1352823).

828904117 is a wasteful number, since it uses less digits than its factorization.

828904117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352822.

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 828904117 is about 28790.6949725080. The cubic root of 828904117 is about 939.3658454755.

The spelling of 828904117 in words is "eight hundred twenty-eight million, nine hundred four thousand, one hundred seventeen".