40540849 has 2 divisors, whose sum is σ = 40540850. Its totient is φ = 40540848.

The previous prime is 40540823. The next prime is 40540861. The reversal of 40540849 is 94804504.

40540849 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., 38837824 + 1703025 = 6232^2 + 1305^2 .

It is a cyclic number.

It is not a de Polignac number, because 40540849 - 2⁵ = 40540817 is a prime.

It is not a weakly prime, because it can be changed into another prime (40540249) 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, 20270424 + 20270425.

It is an arithmetic number, because the mean of its divisors is an integer number (20270425).

Almost surely, 2^40540849 is an apocalyptic number.

It is an amenable number.

40540849 is a deficient number, since it is larger than the sum of its proper divisors (1).

40540849 is an equidigital number, since it uses as much as digits as its factorization.

40540849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 40540849 is about 6367.1696223675. The cubic root of 40540849 is about 343.5296918272.

The spelling of 40540849 in words is "forty million, five hundred forty thousand, eight hundred forty-nine".