4966021 has 4 divisors (see below), whose sum is σ = 4999500. Its totient is φ = 4932544.

The previous prime is 4966007. The next prime is 4966033. The reversal of 4966021 is 1206694.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1920996 + 3045025 = 1386^2 + 1745^2 .

It is a cyclic number.

It is not a de Polignac number, because 4966021 - 2⁷ = 4965893 is a prime.

It is a super-2 number, since 2×4966021² = 49322729144882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4966001) 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 3 ways as a sum of consecutive naturals, for example, 16516 + ... + 16813.

It is an arithmetic number, because the mean of its divisors is an integer number (1249875).

Almost surely, 2^4966021 is an apocalyptic number.

It is an amenable number.

4966021 is a deficient number, since it is larger than the sum of its proper divisors (33479).

4966021 is a wasteful number, since it uses less digits than its factorization.

4966021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33478.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 4966021 is about 2228.4570895577. The cubic root of 4966021 is about 170.6093587258.

The spelling of 4966021 in words is "four million, nine hundred sixty-six thousand, twenty-one".