393192242 has 4 divisors (see below), whose sum is σ = 589788366. Its totient is φ = 196596120.

The previous prime is 393192221. The next prime is 393192259. The reversal of 393192242 is 242291393.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242291393 = 3613 ⋅67061.

It can be written as a sum of positive squares in only one way, i.e., 201895681 + 191296561 = 14209^2 + 13831^2 .

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, 98298059 + ... + 98298062.

Almost surely, 2^393192242 is an apocalyptic number.

393192242 is a deficient number, since it is larger than the sum of its proper divisors (196596124).

393192242 is a wasteful number, since it uses less digits than its factorization.

393192242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196596123.

The product of its digits is 23328, while the sum is 35.

The square root of 393192242 is about 19829.0756718512. The cubic root of 393192242 is about 732.6023600970.

The spelling of 393192242 in words is "three hundred ninety-three million, one hundred ninety-two thousand, two hundred forty-two".