829812081 has 16 divisors (see below), whose sum is σ = 1265060864. Its totient is φ = 473958864.

The previous prime is 829812029. The next prime is 829812083. The reversal of 829812081 is 180218928.

It is not a de Polignac number, because 829812081 - 2⁶ = 829812017 is a prime.

It is a super-2 number, since 2×829812081² = 1377176179547101122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (829812083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44670 + ... + 60456.

It is an arithmetic number, because the mean of its divisors is an integer number (79066304).

Almost surely, 2^829812081 is an apocalyptic number.

It is an amenable number.

829812081 is a deficient number, since it is larger than the sum of its proper divisors (435248783).

829812081 is a wasteful number, since it uses less digits than its factorization.

829812081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18300.

The product of its (nonzero) digits is 18432, while the sum is 39.

The square root of 829812081 is about 28806.4590152972. The cubic root of 829812081 is about 939.7087074634.

The spelling of 829812081 in words is "eight hundred twenty-nine million, eight hundred twelve thousand, eighty-one".