40344563 has 8 divisors (see below), whose sum is σ = 46187520. Its totient is φ = 34521480.

The previous prime is 40344559. The next prime is 40344571. The reversal of 40344563 is 36544304.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40344563 - 2² = 40344559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40344523) 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 in 7 ways as a sum of consecutive naturals, for example, 323 + ... + 8988.

It is an arithmetic number, because the mean of its divisors is an integer number (5773440).

Almost surely, 2^40344563 is an apocalyptic number.

40344563 is a deficient number, since it is larger than the sum of its proper divisors (5842957).

40344563 is an equidigital number, since it uses as much as digits as its factorization.

40344563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9937.

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 40344563 is about 6351.7370065203. The cubic root of 40344563 is about 342.9743738416.

Adding to 40344563 its reverse (36544304), we get a palindrome (76888867).

The spelling of 40344563 in words is "forty million, three hundred forty-four thousand, five hundred sixty-three".