4980021 has 4 divisors (see below), whose sum is σ = 6640032. Its totient is φ = 3320012.

The previous prime is 4979999. The next prime is 4980047. The reversal of 4980021 is 1200894.

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 4980021 - 2⁷ = 4979893 is a prime.

It is a D-number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4979973 and 4980000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4980221) 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, 830001 + ... + 830006.

It is an arithmetic number, because the mean of its divisors is an integer number (1660008).

Almost surely, 2^4980021 is an apocalyptic number.

It is an amenable number.

4980021 is a deficient number, since it is larger than the sum of its proper divisors (1660011).

4980021 is a wasteful number, since it uses less digits than its factorization.

4980021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660010.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 4980021 is about 2231.5960655997. The cubic root of 4980021 is about 170.7695332385.

The spelling of 4980021 in words is "four million, nine hundred eighty thousand, twenty-one".