396168193 has 4 divisors (see below), whose sum is σ = 396539860. Its totient is φ = 395796528.

The previous prime is 396168181. The next prime is 396168211. The reversal of 396168193 is 391861693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 391861693 = 9787 ⋅40039.

It can be written as a sum of positive squares in 2 ways, for example, as 250652224 + 145515969 = 15832^2 + 12063^2 .

It is a cyclic number.

It is not a de Polignac number, because 396168193 - 2⁵ = 396168161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396168133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184230 + ... + 186367.

It is an arithmetic number, because the mean of its divisors is an integer number (99134965).

Almost surely, 2^396168193 is an apocalyptic number.

It is an amenable number.

396168193 is a deficient number, since it is larger than the sum of its proper divisors (371667).

396168193 is a wasteful number, since it uses less digits than its factorization.

396168193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371666.

The product of its digits is 209952, while the sum is 46.

The square root of 396168193 is about 19903.9743016313. The cubic root of 396168193 is about 734.4459971390.

The spelling of 396168193 in words is "three hundred ninety-six million, one hundred sixty-eight thousand, one hundred ninety-three".