440220331 has 4 divisors (see below), whose sum is σ = 441184072. Its totient is φ = 439256592.

The previous prime is 440220323. The next prime is 440220343. The reversal of 440220331 is 133022044.

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

It is a cyclic number.

It is not a de Polignac number, because 440220331 - 2³ = 440220323 is a prime.

It is a super-2 number, since 2×440220331² = 387587879651499122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 440220299 and 440220308.

It is not an unprimeable number, because it can be changed into a prime (440220301) 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, 481185 + ... + 482098.

It is an arithmetic number, because the mean of its divisors is an integer number (110296018).

Almost surely, 2^440220331 is an apocalyptic number.

440220331 is a deficient number, since it is larger than the sum of its proper divisors (963741).

440220331 is an equidigital number, since it uses as much as digits as its factorization.

440220331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963740.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 440220331 is about 20981.4282402319. The cubic root of 440220331 is about 760.7174267729.

Adding to 440220331 its reverse (133022044), we get a palindrome (573242375).

The spelling of 440220331 in words is "four hundred forty million, two hundred twenty thousand, three hundred thirty-one".