40286189 has 2 divisors, whose sum is σ = 40286190. Its totient is φ = 40286188.

The previous prime is 40286177. The next prime is 40286221. The reversal of 40286189 is 98168204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30614089 + 9672100 = 5533^2 + 3110^2 .

It is a cyclic number.

It is not a de Polignac number, because 40286189 - 2²⁰ = 39237613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40286159) 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, 20143094 + 20143095.

It is an arithmetic number, because the mean of its divisors is an integer number (20143095).

Almost surely, 2^40286189 is an apocalyptic number.

It is an amenable number.

40286189 is a deficient number, since it is larger than the sum of its proper divisors (1).

40286189 is an equidigital number, since it uses as much as digits as its factorization.

40286189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 40286189 is about 6347.1402221788. The cubic root of 40286189 is about 342.8088790115.

The spelling of 40286189 in words is "forty million, two hundred eighty-six thousand, one hundred eighty-nine".