4391446 has 4 divisors (see below), whose sum is σ = 6587172. Its totient is φ = 2195722.

The previous prime is 4391437. The next prime is 4391449. The reversal of 4391446 is 6441934.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6441934 = 2 ⋅3220967.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4391449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097860 + ... + 1097863.

It is an arithmetic number, because the mean of its divisors is an integer number (1646793).

Almost surely, 2^4391446 is an apocalyptic number.

4391446 is a deficient number, since it is larger than the sum of its proper divisors (2195726).

4391446 is a wasteful number, since it uses less digits than its factorization.

4391446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2195725.

The product of its digits is 10368, while the sum is 31.

The square root of 4391446 is about 2095.5777246382. The cubic root of 4391446 is about 163.7579962298.

The spelling of 4391446 in words is "four million, three hundred ninety-one thousand, four hundred forty-six".