440440231 has 16 divisors (see below), whose sum is σ = 549739008. Its totient is φ = 342813600.

The previous prime is 440440223. The next prime is 440440261. The reversal of 440440231 is 132044044.

It is a cyclic number.

It is not a de Polignac number, because 440440231 - 2³ = 440440223 is a prime.

It is a super-2 number, since 2×440440231² = 387975194166666722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440440261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79161 + ... + 84541.

It is an arithmetic number, because the mean of its divisors is an integer number (34358688).

Almost surely, 2^440440231 is an apocalyptic number.

440440231 is a deficient number, since it is larger than the sum of its proper divisors (109298777).

440440231 is a wasteful number, since it uses less digits than its factorization.

440440231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6462.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 440440231 is about 20986.6679346675. The cubic root of 440440231 is about 760.8440708678.

Adding to 440440231 its reverse (132044044), we get a palindrome (572484275).

The spelling of 440440231 in words is "four hundred forty million, four hundred forty thousand, two hundred thirty-one".