43013189 has 2 divisors, whose sum is σ = 43013190. Its totient is φ = 43013188.

The previous prime is 43013167. The next prime is 43013219. The reversal of 43013189 is 98131034.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28890625 + 14122564 = 5375^2 + 3758^2 .

It is a cyclic number.

It is not a de Polignac number, because 43013189 - 2²⁰ = 41964613 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43013489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21506594 + 21506595.

It is an arithmetic number, because the mean of its divisors is an integer number (21506595).

Almost surely, 2^43013189 is an apocalyptic number.

It is an amenable number.

43013189 is a deficient number, since it is larger than the sum of its proper divisors (1).

43013189 is an equidigital number, since it uses as much as digits as its factorization.

43013189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 43013189 is about 6558.4440990223. Note that the first 3 decimals coincide. The cubic root of 43013189 is about 350.3756212276.

The spelling of 43013189 in words is "forty-three million, thirteen thousand, one hundred eighty-nine".