4028069 has 2 divisors, whose sum is σ = 4028070. Its totient is φ = 4028068.

The previous prime is 4028009. The next prime is 4028077. The reversal of 4028069 is 9608204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2137444 + 1890625 = 1462^2 + 1375^2 .

It is a cyclic number.

It is not a de Polignac number, because 4028069 - 2¹² = 4023973 is a prime.

It is a super-2 number, since 2×4028069² = 32450679737522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4028009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2014034 + 2014035.

It is an arithmetic number, because the mean of its divisors is an integer number (2014035).

Almost surely, 2^4028069 is an apocalyptic number.

It is an amenable number.

4028069 is a deficient number, since it is larger than the sum of its proper divisors (1).

4028069 is an equidigital number, since it uses as much as digits as its factorization.

4028069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 4028069 is about 2007.0049825549. The cubic root of 4028069 is about 159.1105463849.

The spelling of 4028069 in words is "four million, twenty-eight thousand, sixty-nine".