4820921 has 8 divisors (see below), whose sum is σ = 5528064. Its totient is φ = 4118400.

The previous prime is 4820909. The next prime is 4820923. The reversal of 4820921 is 1290284.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4820921 - 2⁶ = 4820857 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (4820923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1496 + ... + 3446.

It is an arithmetic number, because the mean of its divisors is an integer number (691008).

Almost surely, 2^4820921 is an apocalyptic number.

It is an amenable number.

4820921 is a deficient number, since it is larger than the sum of its proper divisors (707143).

4820921 is a wasteful number, since it uses less digits than its factorization.

4820921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2311.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 4820921 is about 2195.6595819935. The cubic root of 4820921 is about 168.9312536234.

The spelling of 4820921 in words is "four million, eight hundred twenty thousand, nine hundred twenty-one".