40738429 has 2 divisors, whose sum is σ = 40738430. Its totient is φ = 40738428.

The previous prime is 40738393. The next prime is 40738447. The reversal of 40738429 is 92483704.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22231225 + 18507204 = 4715^2 + 4302^2 .

It is a cyclic number.

It is not a de Polignac number, because 40738429 - 2²¹ = 38641277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40738459) 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, 20369214 + 20369215.

It is an arithmetic number, because the mean of its divisors is an integer number (20369215).

Almost surely, 2^40738429 is an apocalyptic number.

It is an amenable number.

40738429 is a deficient number, since it is larger than the sum of its proper divisors (1).

40738429 is an equidigital number, since it uses as much as digits as its factorization.

40738429 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 40738429 is about 6382.6662923891. Note that the first 3 decimals coincide. The cubic root of 40738429 is about 344.0868634302.

The spelling of 40738429 in words is "forty million, seven hundred thirty-eight thousand, four hundred twenty-nine".