393346105 has 4 divisors (see below), whose sum is σ = 472015332. Its totient is φ = 314676880.

The previous prime is 393346103. The next prime is 393346127. The reversal of 393346105 is 501643393.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50466816 + 342879289 = 7104^2 + 18517^2 .

It is not a de Polignac number, because 393346105 - 2¹ = 393346103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (393346103) 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, 39334606 + ... + 39334615.

It is an arithmetic number, because the mean of its divisors is an integer number (118003833).

Almost surely, 2^393346105 is an apocalyptic number.

It is an amenable number.

393346105 is a deficient number, since it is larger than the sum of its proper divisors (78669227).

393346105 is an equidigital number, since it uses as much as digits as its factorization.

393346105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78669226.

The product of its (nonzero) digits is 29160, while the sum is 34.

The square root of 393346105 is about 19832.9550244032. The cubic root of 393346105 is about 732.6979076731.

Adding to 393346105 its reverse (501643393), we get a palindrome (894989498).

The spelling of 393346105 in words is "three hundred ninety-three million, three hundred forty-six thousand, one hundred five".