40821633 has 12 divisors (see below), whose sum is σ = 62068240. Its totient is φ = 25781976.

The previous prime is 40821631. The next prime is 40821653. The reversal of 40821633 is 33612804.

It is a happy number.

40821633 is a `hidden beast` number, since 4 + 0 + 8 + 21 + 633 = 666.

40821633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40821633 - 2¹ = 40821631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40821597 and 40821606.

It is not an unprimeable number, because it can be changed into a prime (40821631) 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 in 11 ways as a sum of consecutive naturals, for example, 119191 + ... + 119532.

Almost surely, 2^40821633 is an apocalyptic number.

It is an amenable number.

40821633 is a deficient number, since it is larger than the sum of its proper divisors (21246607).

40821633 is a wasteful number, since it uses less digits than its factorization.

40821633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238748 (or 238745 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 40821633 is about 6389.1809334217. The cubic root of 40821633 is about 344.3209579966.

The spelling of 40821633 in words is "forty million, eight hundred twenty-one thousand, six hundred thirty-three".