393396361 has 4 divisors (see below), whose sum is σ = 393465492. Its totient is φ = 393327232.

The previous prime is 393396317. The next prime is 393396373. The reversal of 393396361 is 163693393.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 163693393 = 1409 ⋅116177.

It can be written as a sum of positive squares in 2 ways, for example, as 378069136 + 15327225 = 19444^2 + 3915^2 .

It is a cyclic number.

It is not a de Polignac number, because 393396361 - 2⁷ = 393396233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (393396461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25180 + ... + 37693.

It is an arithmetic number, because the mean of its divisors is an integer number (98366373).

Almost surely, 2^393396361 is an apocalyptic number.

It is an amenable number.

393396361 is a deficient number, since it is larger than the sum of its proper divisors (69131).

393396361 is an equidigital number, since it uses as much as digits as its factorization.

393396361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69130.

The product of its digits is 236196, while the sum is 43.

The square root of 393396361 is about 19834.2219660868. The cubic root of 393396361 is about 732.7291108107.

The spelling of 393396361 in words is "three hundred ninety-three million, three hundred ninety-six thousand, three hundred sixty-one".