40435189 has 2 divisors, whose sum is σ = 40435190. Its totient is φ = 40435188.

The previous prime is 40435183. The next prime is 40435201. The reversal of 40435189 is 98153404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40424164 + 11025 = 6358^2 + 105^2 .

It is a cyclic number.

It is not a de Polignac number, because 40435189 - 2²¹ = 38338037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40435183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20217594 + 20217595.

It is an arithmetic number, because the mean of its divisors is an integer number (20217595).

Almost surely, 2^40435189 is an apocalyptic number.

It is an amenable number.

40435189 is a deficient number, since it is larger than the sum of its proper divisors (1).

40435189 is an equidigital number, since it uses as much as digits as its factorization.

40435189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 40435189 is about 6358.8669588221. The cubic root of 40435189 is about 343.2309895938.

The spelling of 40435189 in words is "forty million, four hundred thirty-five thousand, one hundred eighty-nine".