393684252 has 96 divisors (see below), whose sum is σ = 1030815744. Its totient is φ = 116121600.

The previous prime is 393684233. The next prime is 393684259. The reversal of 393684252 is 252486393.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393684259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 613852 + ... + 614492.

It is an arithmetic number, because the mean of its divisors is an integer number (10737664).

Almost surely, 2^393684252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 393684252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (515407872).

393684252 is an abundant number, since it is smaller than the sum of its proper divisors (637131492).

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

393684252 is a wasteful number, since it uses less digits than its factorization.

393684252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819 (or 817 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The square root of 393684252 is about 19841.4780699423. The cubic root of 393684252 is about 732.9078064816.

It can be divided in two parts, 3936 and 84252, that added together give a palindrome (88188).

The spelling of 393684252 in words is "three hundred ninety-three million, six hundred eighty-four thousand, two hundred fifty-two".