4944821 has 4 divisors (see below), whose sum is σ = 5651232. Its totient is φ = 4238412.

The previous prime is 4944817. The next prime is 4944827. The reversal of 4944821 is 1284494.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1284494 = 2 ⋅642247.

It is a cyclic number.

It is not a de Polignac number, because 4944821 - 2² = 4944817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4944827) 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, 353195 + ... + 353208.

It is an arithmetic number, because the mean of its divisors is an integer number (1412808).

Almost surely, 2^4944821 is an apocalyptic number.

It is an amenable number.

4944821 is a deficient number, since it is larger than the sum of its proper divisors (706411).

4944821 is an equidigital number, since it uses as much as digits as its factorization.

4944821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706410.

The product of its digits is 9216, while the sum is 32.

The square root of 4944821 is about 2223.6953478388. The cubic root of 4944821 is about 170.3662346676.

The spelling of 4944821 in words is "four million, nine hundred forty-four thousand, eight hundred twenty-one".