4493845 has 4 divisors (see below), whose sum is σ = 5392620. Its totient is φ = 3595072.

The previous prime is 4493843. The next prime is 4493849. The reversal of 4493845 is 5483944.

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 1800964 + 2692881 = 1342^2 + 1641^2 .

It is a cyclic number.

It is not a de Polignac number, because 4493845 - 2¹ = 4493843 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4493843) 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, 449380 + ... + 449389.

It is an arithmetic number, because the mean of its divisors is an integer number (1348155).

Almost surely, 2^4493845 is an apocalyptic number.

It is an amenable number.

4493845 is a deficient number, since it is larger than the sum of its proper divisors (898775).

4493845 is an equidigital number, since it uses as much as digits as its factorization.

4493845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898774.

The product of its digits is 69120, while the sum is 37.

The square root of 4493845 is about 2119.8690997323. The cubic root of 4493845 is about 165.0210563884.

Subtracting 4493845 from its reverse (5483944), we obtain a palindrome (990099).

The spelling of 4493845 in words is "four million, four hundred ninety-three thousand, eight hundred forty-five".