440040243 has 4 divisors (see below), whose sum is σ = 586720328. Its totient is φ = 293360160.

The previous prime is 440040221. The next prime is 440040253. The reversal of 440040243 is 342040044.

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

It is not a de Polignac number, because 440040243 - 2¹⁶ = 439974707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440040253) 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 3 ways as a sum of consecutive naturals, for example, 73340038 + ... + 73340043.

It is an arithmetic number, because the mean of its divisors is an integer number (146680082).

Almost surely, 2^440040243 is an apocalyptic number.

440040243 is a deficient number, since it is larger than the sum of its proper divisors (146680085).

440040243 is a wasteful number, since it uses less digits than its factorization.

440040243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146680084.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 440040243 is about 20977.1361963448. The cubic root of 440040243 is about 760.6136796599.

Adding to 440040243 its reverse (342040044), we get a palindrome (782080287).

The spelling of 440040243 in words is "four hundred forty million, forty thousand, two hundred forty-three".