40333321 has 6 divisors (see below), whose sum is σ = 46918410. Its totient is φ = 34571376.

The previous prime is 40333313. The next prime is 40333327. The reversal of 40333321 is 12333304.

It can be written as a sum of positive squares in only one way, i.e., 20575296 + 19758025 = 4536^2 + 4445^2 .

It is not a de Polignac number, because 40333321 - 2³ = 40333313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40333327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 411516 + ... + 411613.

It is an arithmetic number, because the mean of its divisors is an integer number (7819735).

Almost surely, 2^40333321 is an apocalyptic number.

It is an amenable number.

40333321 is a deficient number, since it is larger than the sum of its proper divisors (6585089).

40333321 is an equidigital number, since it uses as much as digits as its factorization.

40333321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823143 (or 823136 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 40333321 is about 6350.8519900876. The cubic root of 40333321 is about 342.9425143145.

Adding to 40333321 its reverse (12333304), we get a palindrome (52666625).

The spelling of 40333321 in words is "forty million, three hundred thirty-three thousand, three hundred twenty-one".