4326821 has 2 divisors, whose sum is σ = 4326822. Its totient is φ = 4326820.

The previous prime is 4326797. The next prime is 4326827. The reversal of 4326821 is 1286234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3496900 + 829921 = 1870^2 + 911^2 .

It is a cyclic number.

It is not a de Polignac number, because 4326821 - 2⁶ = 4326757 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4326827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2163410 + 2163411.

It is an arithmetic number, because the mean of its divisors is an integer number (2163411).

Almost surely, 2^4326821 is an apocalyptic number.

It is an amenable number.

4326821 is a deficient number, since it is larger than the sum of its proper divisors (1).

4326821 is an equidigital number, since it uses as much as digits as its factorization.

4326821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 26.

The square root of 4326821 is about 2080.1011994612. The cubic root of 4326821 is about 162.9507297106.

The spelling of 4326821 in words is "four million, three hundred twenty-six thousand, eight hundred twenty-one".