823399982 has 8 divisors (see below), whose sum is σ = 1235731896. Its totient is φ = 411489352.

The previous prime is 823399949. The next prime is 823400057. The reversal of 823399982 is 289993328.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100388 + ... + 108279.

It is an arithmetic number, because the mean of its divisors is an integer number (154466487).

Almost surely, 2^823399982 is an apocalyptic number.

823399982 is a deficient number, since it is larger than the sum of its proper divisors (412331914).

823399982 is a wasteful number, since it uses less digits than its factorization.

823399982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210642.

The product of its digits is 1679616, while the sum is 53.

The square root of 823399982 is about 28694.9469767762. The cubic root of 823399982 is about 937.2820165668.

The spelling of 823399982 in words is "eight hundred twenty-three million, three hundred ninety-nine thousand, nine hundred eighty-two".