829222865 has 8 divisors (see below), whose sum is σ = 998208360. Its totient is φ = 661284352.

The previous prime is 829222859. The next prime is 829222907. The reversal of 829222865 is 568222928.

It can be written as a sum of positive squares in 4 ways, for example, as 1567504 + 827655361 = 1252^2 + 28769^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 829222865 - 2¹⁸ = 828960721 is a prime.

It is a super-2 number, since 2×829222865² = 1375221119677616450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260000 + ... + 263169.

It is an arithmetic number, because the mean of its divisors is an integer number (124776045).

Almost surely, 2^829222865 is an apocalyptic number.

It is an amenable number.

829222865 is a deficient number, since it is larger than the sum of its proper divisors (168985495).

829222865 is a wasteful number, since it uses less digits than its factorization.

829222865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523491.

The product of its digits is 276480, while the sum is 44.

The square root of 829222865 is about 28796.2300483935. The cubic root of 829222865 is about 939.4862384163.

The spelling of 829222865 in words is "eight hundred twenty-nine million, two hundred twenty-two thousand, eight hundred sixty-five".