1043869 has 2 divisors, whose sum is σ = 1043870. Its totient is φ = 1043868.

The previous prime is 1043857. The next prime is 1043873. The reversal of 1043869 is 9683401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 879844 + 164025 = 938^2 + 405^2 .

It is a cyclic number.

It is not a de Polignac number, because 1043869 - 2⁵ = 1043837 is a prime.

It is a super-2 number, since 2×1043869² = 2179324978322, which contains 22 as substring.

It is a Chen prime.

It is equal to p₈₁₆₈₈ and since 1043869 and 81688 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1043869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1043839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521934 + 521935.

It is an arithmetic number, because the mean of its divisors is an integer number (521935).

2^1043869 is an apocalyptic number.

It is an amenable number.

1043869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1043869 is an equidigital number, since it uses as much as digits as its factorization.

1043869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1043869 is about 1021.6990750705. The cubic root of 1043869 is about 101.4414231644.

The spelling of 1043869 in words is "one million, forty-three thousand, eight hundred sixty-nine".