40344037 has 2 divisors, whose sum is σ = 40344038. Its totient is φ = 40344036.

The previous prime is 40343999. The next prime is 40344091. The reversal of 40344037 is 73044304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40335201 + 8836 = 6351^2 + 94^2 .

It is a cyclic number.

It is not a de Polignac number, because 40344037 - 2¹¹ = 40341989 is a prime.

It is equal to p_2453353 and since 40344037 and 2453353 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40344637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20172018 + 20172019.

It is an arithmetic number, because the mean of its divisors is an integer number (20172019).

Almost surely, 2^40344037 is an apocalyptic number.

It is an amenable number.

40344037 is a deficient number, since it is larger than the sum of its proper divisors (1).

40344037 is an equidigital number, since it uses as much as digits as its factorization.

40344037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 40344037 is about 6351.6956003889. The cubic root of 40344037 is about 342.9728833037.

The spelling of 40344037 in words is "forty million, three hundred forty-four thousand, thirty-seven".