4979021 has 2 divisors, whose sum is σ = 4979022. Its totient is φ = 4979020.

The previous prime is 4978993. The next prime is 4979027. The reversal of 4979021 is 1209794.

4979021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2758921 + 2220100 = 1661^2 + 1490^2 .

It is a cyclic number.

It is not a de Polignac number, because 4979021 - 2⁶ = 4978957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4979027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2489510 + 2489511.

It is an arithmetic number, because the mean of its divisors is an integer number (2489511).

Almost surely, 2^4979021 is an apocalyptic number.

It is an amenable number.

4979021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4979021 is an equidigital number, since it uses as much as digits as its factorization.

4979021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 4979021 is about 2231.3719994658. The cubic root of 4979021 is about 170.7581021646.

The spelling of 4979021 in words is "four million, nine hundred seventy-nine thousand, twenty-one".