831393930 has 16 divisors (see below), whose sum is σ = 1995345504. Its totient is φ = 221705040.

The previous prime is 831393917. The next prime is 831393947. The reversal of 831393930 is 39393138.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13856536 + ... + 13856595.

It is an arithmetic number, because the mean of its divisors is an integer number (124709094).

Almost surely, 2^831393930 is an apocalyptic number.

831393930 is an abundant number, since it is smaller than the sum of its proper divisors (1163951574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

831393930 is a wasteful number, since it uses less digits than its factorization.

831393930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27713141.

The product of its (nonzero) digits is 52488, while the sum is 39.

The square root of 831393930 is about 28833.9024413970. The cubic root of 831393930 is about 940.3054424624.

The spelling of 831393930 in words is "eight hundred thirty-one million, three hundred ninety-three thousand, nine hundred thirty".