821984932 has 24 divisors (see below), whose sum is σ = 1513310400. Its totient is φ = 390091296.

The previous prime is 821984929. The next prime is 821984941. The reversal of 821984932 is 239489128.

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, 53208 + ... + 66895.

It is an arithmetic number, because the mean of its divisors is an integer number (63054600).

Almost surely, 2^821984932 is an apocalyptic number.

It is an amenable number.

821984932 is a deficient number, since it is larger than the sum of its proper divisors (691325468).

821984932 is a wasteful number, since it uses less digits than its factorization.

821984932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120195 (or 120193 counting only the distinct ones).

The product of its digits is 248832, while the sum is 46.

The square root of 821984932 is about 28670.2795940326. The cubic root of 821984932 is about 936.7447882281.

The spelling of 821984932 in words is "eight hundred twenty-one million, nine hundred eighty-four thousand, nine hundred thirty-two".