4069421 has 2 divisors, whose sum is σ = 4069422. Its totient is φ = 4069420.

The previous prime is 4069397. The next prime is 4069433. The reversal of 4069421 is 1249604.

4069421 is digitally balanced in base 2, 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., 4056196 + 13225 = 2014^2 + 115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4069421 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 (4069451) 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 as a sum of consecutive naturals, namely, 2034710 + 2034711.

It is an arithmetic number, because the mean of its divisors is an integer number (2034711).

Almost surely, 2^4069421 is an apocalyptic number.

It is an amenable number.

4069421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4069421 is an equidigital number, since it uses as much as digits as its factorization.

4069421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 4069421 is about 2017.2805952569. The cubic root of 4069421 is about 159.6531679863.

The spelling of 4069421 in words is "four million, sixty-nine thousand, four hundred twenty-one".