4223845 has 4 divisors (see below), whose sum is σ = 5068620. Its totient is φ = 3379072.

The previous prime is 4223839. The next prime is 4223873. The reversal of 4223845 is 5483224.

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 715716 + 3508129 = 846^2 + 1873^2 .

It is a cyclic number.

It is not a de Polignac number, because 4223845 - 2⁷ = 4223717 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422380 + ... + 422389.

It is an arithmetic number, because the mean of its divisors is an integer number (1267155).

Almost surely, 2^4223845 is an apocalyptic number.

It is an amenable number.

4223845 is a deficient number, since it is larger than the sum of its proper divisors (844775).

4223845 is an equidigital number, since it uses as much as digits as its factorization.

4223845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844774.

The product of its digits is 7680, while the sum is 28.

The square root of 4223845 is about 2055.1995036979. The cubic root of 4223845 is about 161.6476235526.

The spelling of 4223845 in words is "four million, two hundred twenty-three thousand, eight hundred forty-five".