393842132 has 24 divisors (see below), whose sum is σ = 694213632. Its totient is φ = 195501600.

The previous prime is 393842131. The next prime is 393842161. The reversal of 393842132 is 231248393.

It is a super-2 number, since 2×393842132² = 310223249876610848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 393842092 and 393842101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393842131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455933 + ... + 456795.

It is an arithmetic number, because the mean of its divisors is an integer number (28925568).

Almost surely, 2^393842132 is an apocalyptic number.

It is an amenable number.

393842132 is a deficient number, since it is larger than the sum of its proper divisors (300371500).

393842132 is a wasteful number, since it uses less digits than its factorization.

393842132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559 (or 1557 counting only the distinct ones).

The product of its digits is 31104, while the sum is 35.

The square root of 393842132 is about 19845.4562053887. The cubic root of 393842132 is about 733.0057665594.

The spelling of 393842132 in words is "three hundred ninety-three million, eight hundred forty-two thousand, one hundred thirty-two".