823952109 has 8 divisors (see below), whose sum is σ = 1108870560. Its totient is φ = 544167536.

The previous prime is 823952099. The next prime is 823952153. The reversal of 823952109 is 901259328.

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 823952109 - 2⁷ = 823951981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823952179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1283094 + ... + 1283735.

It is an arithmetic number, because the mean of its divisors is an integer number (138608820).

Almost surely, 2^823952109 is an apocalyptic number.

It is an amenable number.

823952109 is a deficient number, since it is larger than the sum of its proper divisors (284918451).

823952109 is a wasteful number, since it uses less digits than its factorization.

823952109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2566939.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 823952109 is about 28704.5659956739. The cubic root of 823952109 is about 937.4914664468.

The spelling of 823952109 in words is "eight hundred twenty-three million, nine hundred fifty-two thousand, one hundred nine".