393449 has 4 divisors (see below), whose sum is σ = 449664. Its totient is φ = 337236.

The previous prime is 393413. The next prime is 393451. The reversal of 393449 is 944393.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-393449 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 393449.

It is not an unprimeable number, because it can be changed into a prime (393479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28097 + ... + 28110.

It is an arithmetic number, because the mean of its divisors is an integer number (112416).

2³⁹³⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

393449 is a deficient number, since it is larger than the sum of its proper divisors (56215).

393449 is an equidigital number, since it uses as much as digits as its factorization.

393449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56214.

The product of its digits is 11664, while the sum is 32.

The square root of 393449 is about 627.2551315055. The cubic root of 393449 is about 73.2761790665.

The spelling of 393449 in words is "three hundred ninety-three thousand, four hundred forty-nine".