40344305 has 4 divisors (see below), whose sum is σ = 48413172. Its totient is φ = 32275440.

The previous prime is 40344301. The next prime is 40344313. The reversal of 40344305 is 50344304.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12645136 + 27699169 = 3556^2 + 5263^2 .

It is not a de Polignac number, because 40344305 - 2² = 40344301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40344301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4034426 + ... + 4034435.

It is an arithmetic number, because the mean of its divisors is an integer number (12103293).

Almost surely, 2^40344305 is an apocalyptic number.

It is an amenable number.

40344305 is a deficient number, since it is larger than the sum of its proper divisors (8068867).

40344305 is an equidigital number, since it uses as much as digits as its factorization.

40344305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8068866.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 40344305 is about 6351.7166970828. The cubic root of 40344305 is about 342.9736427429.

Adding to 40344305 its reverse (50344304), we get a palindrome (90688609).

Subtracting 40344305 from its reverse (50344304), we obtain a palindrome (9999999).

The spelling of 40344305 in words is "forty million, three hundred forty-four thousand, three hundred five".