4930821 has 24 divisors (see below), whose sum is σ = 8499840. Its totient is φ = 2816856.

The previous prime is 4930819. The next prime is 4930831. The reversal of 4930821 is 1280394.

It is not a de Polignac number, because 4930821 - 2¹ = 4930819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4930811) 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 23 ways as a sum of consecutive naturals, for example, 541 + ... + 3186.

It is an arithmetic number, because the mean of its divisors is an integer number (354160).

Almost surely, 2^4930821 is an apocalyptic number.

It is an amenable number.

4930821 is a deficient number, since it is larger than the sum of its proper divisors (3569019).

4930821 is a wasteful number, since it uses less digits than its factorization.

4930821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3750 (or 3737 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 4930821 is about 2220.5452033228. The cubic root of 4930821 is about 170.2052998369.

The spelling of 4930821 in words is "four million, nine hundred thirty thousand, eight hundred twenty-one".