4806821 has 2 divisors, whose sum is σ = 4806822. Its totient is φ = 4806820.

The previous prime is 4806803. The next prime is 4806827. The reversal of 4806821 is 1286084.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4669921 + 136900 = 2161^2 + 370^2 .

It is a cyclic number.

It is not a de Polignac number, because 4806821 - 2¹⁴ = 4790437 is a prime.

It is a super-3 number, since 3×4806821³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4806827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2403410 + 2403411.

It is an arithmetic number, because the mean of its divisors is an integer number (2403411).

Almost surely, 2^4806821 is an apocalyptic number.

It is an amenable number.

4806821 is a deficient number, since it is larger than the sum of its proper divisors (1).

4806821 is an equidigital number, since it uses as much as digits as its factorization.

4806821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 4806821 is about 2192.4463505409. The cubic root of 4806821 is about 168.7663987721.

The spelling of 4806821 in words is "four million, eight hundred six thousand, eight hundred twenty-one".