393842712 has 16 divisors (see below), whose sum is σ = 984606840. Its totient is φ = 131280896.

The previous prime is 393842677. The next prime is 393842717. The reversal of 393842712 is 217248393.

It is a super-2 number, since 2×393842712² = 310224163591029888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393842717) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8205033 + ... + 8205080.

Almost surely, 2^393842712 is an apocalyptic number.

It is an amenable number.

393842712 is an abundant number, since it is smaller than the sum of its proper divisors (590764128).

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

393842712 is a wasteful number, since it uses less digits than its factorization.

393842712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16410122 (or 16410118 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 393842712 is about 19845.4708183001. The cubic root of 393842712 is about 733.0061263848.

The spelling of 393842712 in words is "three hundred ninety-three million, eight hundred forty-two thousand, seven hundred twelve".