43000169 has 2 divisors, whose sum is σ = 43000170. Its totient is φ = 43000168.

The previous prime is 43000151. The next prime is 43000183. The reversal of 43000169 is 96100034.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37982569 + 5017600 = 6163^2 + 2240^2 .

It is a cyclic number.

It is not a de Polignac number, because 43000169 - 2²⁴ = 26222953 is a prime.

It is a super-2 number, since 2×43000169² = 3698029068057122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (43000109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21500084 + 21500085.

It is an arithmetic number, because the mean of its divisors is an integer number (21500085).

Almost surely, 2^43000169 is an apocalyptic number.

It is an amenable number.

43000169 is a deficient number, since it is larger than the sum of its proper divisors (1).

43000169 is an equidigital number, since it uses as much as digits as its factorization.

43000169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 43000169 is about 6557.4514104185. The cubic root of 43000169 is about 350.3402650104.

The spelling of 43000169 in words is "forty-three million, one hundred sixty-nine", and thus it is an aban number.