828999999 has 12 divisors (see below), whose sum is σ = 1198032576. Its totient is φ = 552395232.

The previous prime is 828999991. The next prime is 829000013. The reversal of 828999999 is 999999828.

It is not a de Polignac number, because 828999999 - 2³ = 828999991 is a prime.

828999999 is a modest number, since divided by 99999 gives 8289 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828999991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2319 + ... + 40784.

It is an arithmetic number, because the mean of its divisors is an integer number (99836048).

Almost surely, 2^828999999 is an apocalyptic number.

828999999 is a deficient number, since it is larger than the sum of its proper divisors (369032577).

828999999 is a wasteful number, since it uses less digits than its factorization.

828999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45246 (or 45243 counting only the distinct ones).

The product of its digits is 68024448, while the sum is 72.

The square root of 828999999 is about 28792.3600804102. The cubic root of 828999999 is about 939.4020639000.

The spelling of 828999999 in words is "eight hundred twenty-eight million, nine hundred ninety-nine thousand, nine hundred ninety-nine".