40033309 has 2 divisors, whose sum is σ = 40033310. Its totient is φ = 40033308.

The previous prime is 40033303. The next prime is 40033333. The reversal of 40033309 is 90333004.

40033309 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., 24651225 + 15382084 = 4965^2 + 3922^2 .

It is a cyclic number.

It is not a de Polignac number, because 40033309 - 2⁵ = 40033277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40033309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40033303) 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, 20016654 + 20016655.

It is an arithmetic number, because the mean of its divisors is an integer number (20016655).

Almost surely, 2^40033309 is an apocalyptic number.

It is an amenable number.

40033309 is a deficient number, since it is larger than the sum of its proper divisors (1).

40033309 is an equidigital number, since it uses as much as digits as its factorization.

40033309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 40033309 is about 6327.1880800242. The cubic root of 40033309 is about 342.0900923122.

The spelling of 40033309 in words is "forty million, thirty-three thousand, three hundred nine".