40949449 has 2 divisors, whose sum is σ = 40949450. Its totient is φ = 40949448.

The previous prime is 40949431. The next prime is 40949471. The reversal of 40949449 is 94494904.

40949449 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., 40449600 + 499849 = 6360^2 + 707^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40949449 is a prime.

It is not a weakly prime, because it can be changed into another prime (40949429) 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, 20474724 + 20474725.

It is an arithmetic number, because the mean of its divisors is an integer number (20474725).

Almost surely, 2^40949449 is an apocalyptic number.

It is an amenable number.

40949449 is a deficient number, since it is larger than the sum of its proper divisors (1).

40949449 is an equidigital number, since it uses as much as digits as its factorization.

40949449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 40949449 is about 6399.1756500349. The cubic root of 40949449 is about 344.6799496336.

The spelling of 40949449 in words is "forty million, nine hundred forty-nine thousand, four hundred forty-nine".