393000394 has 4 divisors (see below), whose sum is σ = 589500594. Its totient is φ = 196500196.

The previous prime is 393000341. The next prime is 393000403. The reversal of 393000394 is 493000393.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 493000393 = 2003 ⋅246131.

It can be written as a sum of positive squares in only one way, i.e., 281803369 + 111197025 = 16787^2 + 10545^2 .

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 as a sum of consecutive naturals, namely, 98250097 + ... + 98250100.

Almost surely, 2^393000394 is an apocalyptic number.

393000394 is a deficient number, since it is larger than the sum of its proper divisors (196500200).

393000394 is a wasteful number, since it uses less digits than its factorization.

393000394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196500199.

The product of its (nonzero) digits is 8748, while the sum is 31.

The square root of 393000394 is about 19824.2375389320. The cubic root of 393000394 is about 732.4831892456.

Subtracting 393000394 from its reverse (493000393), we obtain a palindrome (99999999).

The spelling of 393000394 in words is "three hundred ninety-three million, three hundred ninety-four", and thus it is an aban number.