393852639252 has 24 divisors (see below), whose sum is σ = 919682060416. Its totient is φ = 131185274688.

The previous prime is 393852639233. The next prime is 393852639277. The reversal of 393852639252 is 252936258393.

It is a super-2 number, since 2×393852639252² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 393852639192 and 393852639201.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 12350713 + ... + 12382560.

Almost surely, 2^393852639252 is an apocalyptic number.

It is an amenable number.

393852639252 is an abundant number, since it is smaller than the sum of its proper divisors (525829421164).

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

393852639252 is a wasteful number, since it uses less digits than its factorization.

393852639252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24734607 (or 24734605 counting only the distinct ones).

The product of its digits is 20995200, while the sum is 57.

The spelling of 393852639252 in words is "three hundred ninety-three billion, eight hundred fifty-two million, six hundred thirty-nine thousand, two hundred fifty-two".