828331009 has 4 divisors (see below), whose sum is σ = 903633840. Its totient is φ = 753028180.

The previous prime is 828330989. The next prime is 828331043. The reversal of 828331009 is 900133828.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 828331009 - 2⁹ = 828330497 is a prime.

It is a super-2 number, since 2×828331009² = 1372264520941916162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (828331109) 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, 37651399 + ... + 37651420.

It is an arithmetic number, because the mean of its divisors is an integer number (225908460).

Almost surely, 2^828331009 is an apocalyptic number.

It is an amenable number.

828331009 is a deficient number, since it is larger than the sum of its proper divisors (75302831).

828331009 is a wasteful number, since it uses less digits than its factorization.

828331009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75302830.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 828331009 is about 28780.7402441285. The cubic root of 828331009 is about 939.1493016510.

The spelling of 828331009 in words is "eight hundred twenty-eight million, three hundred thirty-one thousand, nine".