40296181 has 2 divisors, whose sum is σ = 40296182. Its totient is φ = 40296180.

The previous prime is 40296163. The next prime is 40296209. The reversal of 40296181 is 18169204.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36493681 + 3802500 = 6041^2 + 1950^2 .

It is a cyclic number.

It is not a de Polignac number, because 40296181 - 2¹⁷ = 40165109 is a prime.

It is a super-2 number, since 2×40296181² = 3247564406369522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40216181) 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, 20148090 + 20148091.

It is an arithmetic number, because the mean of its divisors is an integer number (20148091).

Almost surely, 2^40296181 is an apocalyptic number.

It is an amenable number.

40296181 is a deficient number, since it is larger than the sum of its proper divisors (1).

40296181 is an equidigital number, since it uses as much as digits as its factorization.

40296181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 40296181 is about 6347.9272995207. The cubic root of 40296181 is about 342.8372184437.

The spelling of 40296181 in words is "forty million, two hundred ninety-six thousand, one hundred eighty-one".