40261849 has 2 divisors, whose sum is σ = 40261850. Its totient is φ = 40261848.

The previous prime is 40261829. The next prime is 40261873. The reversal of 40261849 is 94816204.

40261849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36905625 + 3356224 = 6075^2 + 1832^2 .

It is a cyclic number.

It is not a de Polignac number, because 40261849 - 2⁷ = 40261721 is a prime.

It is not a weakly prime, because it can be changed into another prime (40261829) 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, 20130924 + 20130925.

It is an arithmetic number, because the mean of its divisors is an integer number (20130925).

Almost surely, 2^40261849 is an apocalyptic number.

It is an amenable number.

40261849 is a deficient number, since it is larger than the sum of its proper divisors (1).

40261849 is an equidigital number, since it uses as much as digits as its factorization.

40261849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 40261849 is about 6345.2225335287. Note that the first 3 decimals coincide. The cubic root of 40261849 is about 342.7398259911.

The spelling of 40261849 in words is "forty million, two hundred sixty-one thousand, eight hundred forty-nine".