823972396 has 24 divisors (see below), whose sum is σ = 1567957664. Its totient is φ = 376600320.

The previous prime is 823972381. The next prime is 823972423. The reversal of 823972396 is 693279328.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71565 + ... + 82276.

Almost surely, 2^823972396 is an apocalyptic number.

It is an amenable number.

823972396 is a deficient number, since it is larger than the sum of its proper divisors (743985268).

823972396 is a wasteful number, since it uses less digits than its factorization.

823972396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153961 (or 153959 counting only the distinct ones).

The product of its digits is 979776, while the sum is 49.

The square root of 823972396 is about 28704.9193693346. The cubic root of 823972396 is about 937.4991605563.

The spelling of 823972396 in words is "eight hundred twenty-three million, nine hundred seventy-two thousand, three hundred ninety-six".