4345405 has 4 divisors (see below), whose sum is σ = 5214492. Its totient is φ = 3476320.

The previous prime is 4345403. The next prime is 4345423. The reversal of 4345405 is 5045434.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5045434 = 2 ⋅2522717.

It can be written as a sum of positive squares in 2 ways, for example, as 3006756 + 1338649 = 1734^2 + 1157^2 .

It is not a de Polignac number, because 4345405 - 2¹ = 4345403 is a prime.

It is a super-2 number, since 2×4345405² = 37765089228050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4345405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4345403) by changing a digit.

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, 434536 + ... + 434545.

It is an arithmetic number, because the mean of its divisors is an integer number (1303623).

Almost surely, 2^4345405 is an apocalyptic number.

It is an amenable number.

4345405 is a deficient number, since it is larger than the sum of its proper divisors (869087).

4345405 is an equidigital number, since it uses as much as digits as its factorization.

4345405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869086.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 4345405 is about 2084.5635034702. The cubic root of 4345405 is about 163.1836914411.

The spelling of 4345405 in words is "four million, three hundred forty-five thousand, four hundred five".