4369021 has 2 divisors, whose sum is σ = 4369022. Its totient is φ = 4369020.

The previous prime is 4368989. The next prime is 4369033. The reversal of 4369021 is 1209634.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4044121 + 324900 = 2011^2 + 570^2 .

It is a cyclic number.

It is not a de Polignac number, because 4369021 - 2⁵ = 4368989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4369061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2184510 + 2184511.

It is an arithmetic number, because the mean of its divisors is an integer number (2184511).

Almost surely, 2^4369021 is an apocalyptic number.

It is an amenable number.

4369021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4369021 is an equidigital number, since it uses as much as digits as its factorization.

4369021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 4369021 is about 2090.2203233152. The cubic root of 4369021 is about 163.4787759985.

The spelling of 4369021 in words is "four million, three hundred sixty-nine thousand, twenty-one".