4043869 has 2 divisors, whose sum is σ = 4043870. Its totient is φ = 4043868.

The previous prime is 4043821. The next prime is 4043887. The reversal of 4043869 is 9683404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3286969 + 756900 = 1813^2 + 870^2 .

It is a cyclic number.

It is not a de Polignac number, because 4043869 - 2⁹ = 4043357 is a prime.

It is a super-2 number, since 2×4043869² = 32705752978322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4043899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2021934 + 2021935.

It is an arithmetic number, because the mean of its divisors is an integer number (2021935).

Almost surely, 2^4043869 is an apocalyptic number.

It is an amenable number.

4043869 is a deficient number, since it is larger than the sum of its proper divisors (1).

4043869 is an equidigital number, since it uses as much as digits as its factorization.

4043869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 4043869 is about 2010.9373436286. The cubic root of 4043869 is about 159.3183106852.

The spelling of 4043869 in words is "four million, forty-three thousand, eight hundred sixty-nine".