393489252 has 120 divisors (see below), whose sum is σ = 1119774656. Its totient is φ = 119765952.

The previous prime is 393489227. The next prime is 393489253. The reversal of 393489252 is 252984393.

It is a happy number.

393489252 is a `hidden beast` number, since 393 + 4 + 8 + 9 + 252 = 666.

It is a super-3 number, since 3×393489252³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 393489198 and 393489207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393489253) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 433383 + ... + 434289.

Almost surely, 2^393489252 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 393489252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (559887328).

393489252 is an abundant number, since it is smaller than the sum of its proper divisors (726285404).

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

393489252 is a wasteful number, since it uses less digits than its factorization.

393489252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039 (or 1028 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 393489252 is about 19836.5635128668. The cubic root of 393489252 is about 732.7867783356.

The spelling of 393489252 in words is "three hundred ninety-three million, four hundred eighty-nine thousand, two hundred fifty-two".