40143629 has 2 divisors, whose sum is σ = 40143630. Its totient is φ = 40143628.

The previous prime is 40143601. The next prime is 40143641. The reversal of 40143629 is 92634104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25908100 + 14235529 = 5090^2 + 3773^2 .

It is a cyclic number.

It is not a de Polignac number, because 40143629 - 2⁸ = 40143373 is a prime.

It is a super-2 number, since 2×40143629² = 3223021898579282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40143679) 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, 20071814 + 20071815.

It is an arithmetic number, because the mean of its divisors is an integer number (20071815).

Almost surely, 2^40143629 is an apocalyptic number.

It is an amenable number.

40143629 is a deficient number, since it is larger than the sum of its proper divisors (1).

40143629 is an equidigital number, since it uses as much as digits as its factorization.

40143629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 40143629 is about 6335.9000149939. The cubic root of 40143629 is about 342.4040372637.

The spelling of 40143629 in words is "forty million, one hundred forty-three thousand, six hundred twenty-nine".