40837429 has 2 divisors, whose sum is σ = 40837430. Its totient is φ = 40837428.

The previous prime is 40837399. The next prime is 40837453. The reversal of 40837429 is 92473804.

It is a happy number.

40837429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40832100 + 5329 = 6390^2 + 73^2 .

It is a cyclic number.

It is not a de Polignac number, because 40837429 - 2⁷ = 40837301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40837129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20418714 + 20418715.

It is an arithmetic number, because the mean of its divisors is an integer number (20418715).

Almost surely, 2^40837429 is an apocalyptic number.

It is an amenable number.

40837429 is a deficient number, since it is larger than the sum of its proper divisors (1).

40837429 is an equidigital number, since it uses as much as digits as its factorization.

40837429 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 40837429 is about 6390.4169660516. The cubic root of 40837429 is about 344.3653641286.

The spelling of 40837429 in words is "forty million, eight hundred thirty-seven thousand, four hundred twenty-nine".