823399934 has 16 divisors (see below), whose sum is σ = 1414361088. Its totient is φ = 352181112.

The previous prime is 823399933. The next prime is 823399943. The reversal of 823399934 is 439993328.

823399934 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×823399934² = 1355974902622408712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823399933) 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, 51422 + ... + 65505.

It is an arithmetic number, because the mean of its divisors is an integer number (88397568).

Almost surely, 2^823399934 is an apocalyptic number.

823399934 is a deficient number, since it is larger than the sum of its proper divisors (590961154).

823399934 is a wasteful number, since it uses less digits than its factorization.

823399934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117439.

The product of its digits is 1259712, while the sum is 50.

The square root of 823399934 is about 28694.9461403920. The cubic root of 823399934 is about 937.2819983539.

The spelling of 823399934 in words is "eight hundred twenty-three million, three hundred ninety-nine thousand, nine hundred thirty-four".