393946234 has 12 divisors (see below), whose sum is σ = 649523322. Its totient is φ = 179066360.

The previous prime is 393946211. The next prime is 393946249. The reversal of 393946234 is 432649393.

It can be written as a sum of positive squares in only one way, i.e., 380367009 + 13579225 = 19503^2 + 3685^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 813697 + ... + 814180.

Almost surely, 2^393946234 is an apocalyptic number.

393946234 is a deficient number, since it is larger than the sum of its proper divisors (255577088).

393946234 is a wasteful number, since it uses less digits than its factorization.

393946234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627901 (or 1627890 counting only the distinct ones).

The product of its digits is 419904, while the sum is 43.

The square root of 393946234 is about 19848.0788490977. The cubic root of 393946234 is about 733.0703445869.

The spelling of 393946234 in words is "three hundred ninety-three million, nine hundred forty-six thousand, two hundred thirty-four".