4393405 has 4 divisors (see below), whose sum is σ = 5272092. Its totient is φ = 3514720.

The previous prime is 4393397. The next prime is 4393423. The reversal of 4393405 is 5043934.

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 683929 + 3709476 = 827^2 + 1926^2 .

It is not a de Polignac number, because 4393405 - 2³ = 4393397 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439336 + ... + 439345.

It is an arithmetic number, because the mean of its divisors is an integer number (1318023).

Almost surely, 2^4393405 is an apocalyptic number.

It is an amenable number.

4393405 is a deficient number, since it is larger than the sum of its proper divisors (878687).

4393405 is an equidigital number, since it uses as much as digits as its factorization.

4393405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878686.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 4393405 is about 2096.0450853930. The cubic root of 4393405 is about 163.7823431248.

It can be divided in two parts, 439 and 3405, that added together give a square (3844 = 62²).

The spelling of 4393405 in words is "four million, three hundred ninety-three thousand, four hundred five".