440040231 has 12 divisors (see below), whose sum is σ = 646387560. Its totient is φ = 288387600.

The previous prime is 440040221. The next prime is 440040253. The reversal of 440040231 is 132040044.

It is not a de Polignac number, because 440040231 - 2⁷ = 440040103 is a prime.

It is a super-2 number, since 2×440040231² = 387270809797066722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440040221) 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 11 ways as a sum of consecutive naturals, for example, 413820 + ... + 414881.

It is an arithmetic number, because the mean of its divisors is an integer number (53865630).

Almost surely, 2^440040231 is an apocalyptic number.

440040231 is a deficient number, since it is larger than the sum of its proper divisors (206347329).

440040231 is a wasteful number, since it uses less digits than its factorization.

440040231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828766 (or 828763 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 440040231 is about 20977.1359103191. The cubic root of 440040231 is about 760.6136727459.

Adding to 440040231 its reverse (132040044), we get a palindrome (572080275).

The spelling of 440040231 in words is "four hundred forty million, forty thousand, two hundred thirty-one".