40445849 has 2 divisors, whose sum is σ = 40445850. Its totient is φ = 40445848.

The previous prime is 40445831. The next prime is 40445863. The reversal of 40445849 is 94854404.

40445849 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., 32855824 + 7590025 = 5732^2 + 2755^2 .

It is a cyclic number.

It is not a de Polignac number, because 40445849 - 2¹⁶ = 40380313 is a prime.

It is not a weakly prime, because it can be changed into another prime (40445809) 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, 20222924 + 20222925.

It is an arithmetic number, because the mean of its divisors is an integer number (20222925).

Almost surely, 2^40445849 is an apocalyptic number.

It is an amenable number.

40445849 is a deficient number, since it is larger than the sum of its proper divisors (1).

40445849 is an equidigital number, since it uses as much as digits as its factorization.

40445849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 40445849 is about 6359.7051032261. The cubic root of 40445849 is about 343.2611491401.

The spelling of 40445849 in words is "forty million, four hundred forty-five thousand, eight hundred forty-nine".