40873429 has 2 divisors, whose sum is σ = 40873430. Its totient is φ = 40873428.

The previous prime is 40873421. The next prime is 40873451. The reversal of 40873429 is 92437804.

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., 37271025 + 3602404 = 6105^2 + 1898^2 .

It is a cyclic number.

It is not a de Polignac number, because 40873429 - 2³ = 40873421 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40873421) 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, 20436714 + 20436715.

It is an arithmetic number, because the mean of its divisors is an integer number (20436715).

Almost surely, 2^40873429 is an apocalyptic number.

It is an amenable number.

40873429 is a deficient number, since it is larger than the sum of its proper divisors (1).

40873429 is an equidigital number, since it uses as much as digits as its factorization.

40873429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 40873429 is about 6393.2330631692. The cubic root of 40873429 is about 344.4665255085.

It can be divided in two parts, 408 and 73429, that added together give a palindrome (73837).

The spelling of 40873429 in words is "forty million, eight hundred seventy-three thousand, four hundred twenty-nine".