40330305 has 20 divisors (see below), whose sum is σ = 72296532. Its totient is φ = 21509280.

The previous prime is 40330291. The next prime is 40330313. The reversal of 40330305 is 50303304.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25492401 + 14837904 = 5049^2 + 3852^2 .

It is not a de Polignac number, because 40330305 - 2⁴ = 40330289 is a prime.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 49386 + ... + 50195.

Almost surely, 2^40330305 is an apocalyptic number.

40330305 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40330305 is a deficient number, since it is larger than the sum of its proper divisors (31966227).

40330305 is an equidigital number, since it uses as much as digits as its factorization.

40330305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99598 (or 99589 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 18.

The square root of 40330305 is about 6350.6145371924. The cubic root of 40330305 is about 342.9339660441.

Adding to 40330305 its reverse (50303304), we get a palindrome (90633609).

The spelling of 40330305 in words is "forty million, three hundred thirty thousand, three hundred five".