40820333 has 2 divisors, whose sum is σ = 40820334. Its totient is φ = 40820332.

The previous prime is 40820293. The next prime is 40820363. The reversal of 40820333 is 33302804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38962564 + 1857769 = 6242^2 + 1363^2 .

It is a cyclic number.

It is not a de Polignac number, because 40820333 - 2²⁰ = 39771757 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40820299 and 40820308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40820363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20410166 + 20410167.

It is an arithmetic number, because the mean of its divisors is an integer number (20410167).

Almost surely, 2^40820333 is an apocalyptic number.

It is an amenable number.

40820333 is a deficient number, since it is larger than the sum of its proper divisors (1).

40820333 is an equidigital number, since it uses as much as digits as its factorization.

40820333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 40820333 is about 6389.0791981318. The cubic root of 40820333 is about 344.3173028921.

The spelling of 40820333 in words is "forty million, eight hundred twenty thousand, three hundred thirty-three".