40284173 has 2 divisors, whose sum is σ = 40284174. Its totient is φ = 40284172.

The previous prime is 40284151. The next prime is 40284191. The reversal of 40284173 is 37148204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39664804 + 619369 = 6298^2 + 787^2 .

It is a cyclic number.

It is not a de Polignac number, because 40284173 - 2¹⁴ = 40267789 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 (40284143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20142086 + 20142087.

It is an arithmetic number, because the mean of its divisors is an integer number (20142087).

Almost surely, 2^40284173 is an apocalyptic number.

It is an amenable number.

40284173 is a deficient number, since it is larger than the sum of its proper divisors (1).

40284173 is an equidigital number, since it uses as much as digits as its factorization.

40284173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 40284173 is about 6346.9814085122. The cubic root of 40284173 is about 342.8031606396.

The spelling of 40284173 in words is "forty million, two hundred eighty-four thousand, one hundred seventy-three".