40440323 has 8 divisors (see below), whose sum is σ = 50419200. Its totient is φ = 31511880.

The previous prime is 40440319. The next prime is 40440347. The reversal of 40440323 is 32304404.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40440323 - 2² = 40440319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40440295 and 40440304.

It is not an unprimeable number, because it can be changed into a prime (40440313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262523 + ... + 262676.

It is an arithmetic number, because the mean of its divisors is an integer number (6302400).

Almost surely, 2^40440323 is an apocalyptic number.

40440323 is a deficient number, since it is larger than the sum of its proper divisors (9978877).

40440323 is a wasteful number, since it uses less digits than its factorization.

40440323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525217.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 40440323 is about 6359.2706342787. The cubic root of 40440323 is about 343.2455155003.

Adding to 40440323 its reverse (32304404), we get a palindrome (72744727).

The spelling of 40440323 in words is "forty million, four hundred forty thousand, three hundred twenty-three".