4442723 has 4 divisors (see below), whose sum is σ = 4499040. Its totient is φ = 4386408.

The previous prime is 4442689. The next prime is 4442743. The reversal of 4442723 is 3272444.

4442723 is nontrivially palindromic in base 9.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4442723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4442692 and 4442701.

It is not an unprimeable number, because it can be changed into a prime (4442743) 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, 28040 + ... + 28197.

It is an arithmetic number, because the mean of its divisors is an integer number (1124760).

Almost surely, 2^4442723 is an apocalyptic number.

4442723 is a deficient number, since it is larger than the sum of its proper divisors (56317).

4442723 is an equidigital number, since it uses as much as digits as its factorization.

4442723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56316.

The product of its digits is 5376, while the sum is 26.

The square root of 4442723 is about 2107.7767908391. The cubic root of 4442723 is about 164.3929083121.

The spelling of 4442723 in words is "four million, four hundred forty-two thousand, seven hundred twenty-three".