40041003449 has 2 divisors, whose sum is σ = 40041003450. Its totient is φ = 40041003448.

The previous prime is 40041003437. The next prime is 40041003491. The reversal of 40041003449 is 94430014004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31211582224 + 8829421225 = 176668^2 + 93965^2 .

It is a cyclic number.

It is not a de Polignac number, because 40041003449 - 2⁴ = 40041003433 is a prime.

It is not a weakly prime, because it can be changed into another prime (40041003049) 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, 20020501724 + 20020501725.

It is an arithmetic number, because the mean of its divisors is an integer number (20020501725).

Almost surely, 2^40041003449 is an apocalyptic number.

It is an amenable number.

40041003449 is a deficient number, since it is larger than the sum of its proper divisors (1).

40041003449 is an equidigital number, since it uses as much as digits as its factorization.

40041003449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 40041003449 in words is "forty billion, forty-one million, three thousand, four hundred forty-nine".