40333649 has 2 divisors, whose sum is σ = 40333650. Its totient is φ = 40333648.

The previous prime is 40333633. The next prime is 40333679. The reversal of 40333649 is 94633304.

It is a happy number.

40333649 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., 31719424 + 8614225 = 5632^2 + 2935^2 .

It is a cyclic number.

It is not a de Polignac number, because 40333649 - 2⁴ = 40333633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40333679) 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, 20166824 + 20166825.

It is an arithmetic number, because the mean of its divisors is an integer number (20166825).

Almost surely, 2^40333649 is an apocalyptic number.

It is an amenable number.

40333649 is a deficient number, since it is larger than the sum of its proper divisors (1).

40333649 is an equidigital number, since it uses as much as digits as its factorization.

40333649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 32.

The square root of 40333649 is about 6350.8778133420. The cubic root of 40333649 is about 342.9434439415.

The spelling of 40333649 in words is "forty million, three hundred thirty-three thousand, six hundred forty-nine".