393865852 has 6 divisors (see below), whose sum is σ = 689265248. Its totient is φ = 196932924.

The previous prime is 393865831. The next prime is 393865859. The reversal of 393865852 is 258568393.

It is a junction number, because it is equal to n+sod(n) for n = 393865796 and 393865805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393865859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49233228 + ... + 49233235.

Almost surely, 2^393865852 is an apocalyptic number.

It is an amenable number.

393865852 is a deficient number, since it is larger than the sum of its proper divisors (295399396).

393865852 is a wasteful number, since it uses less digits than its factorization.

393865852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98466467 (or 98466465 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 49.

The square root of 393865852 is about 19846.0538142977. The cubic root of 393865852 is about 733.0204818868.

The spelling of 393865852 in words is "three hundred ninety-three million, eight hundred sixty-five thousand, eight hundred fifty-two".