4442649 has 4 divisors (see below), whose sum is σ = 5923536. Its totient is φ = 2961764.

The previous prime is 4442639. The next prime is 4442663. The reversal of 4442649 is 9462444.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4442649 - 2⁷ = 4442521 is a prime.

It is a d-powerful number, because it can be written as 4⁴ + 4⁶ + 4⁸ + 2¹⁷ + 6⁶ + 4¹¹ + 9³ .

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4442609) 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, 740439 + ... + 740444.

It is an arithmetic number, because the mean of its divisors is an integer number (1480884).

Almost surely, 2^4442649 is an apocalyptic number.

It is an amenable number.

4442649 is a deficient number, since it is larger than the sum of its proper divisors (1480887).

4442649 is a wasteful number, since it uses less digits than its factorization.

4442649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480886.

The product of its digits is 27648, while the sum is 33.

The square root of 4442649 is about 2107.7592367251. The cubic root of 4442649 is about 164.3919955729.

The spelling of 4442649 in words is "four million, four hundred forty-two thousand, six hundred forty-nine".