440222331 has 4 divisors (see below), whose sum is σ = 586963112. Its totient is φ = 293481552.

The previous prime is 440222329. The next prime is 440222389. The reversal of 440222331 is 133222044.

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

It is not a de Polignac number, because 440222331 - 2¹ = 440222329 is a prime.

It is a super-2 number, since 2×440222331² = 387591401422147122, 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 = 440222298 and 440222307.

It is not an unprimeable number, because it can be changed into a prime (440222311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73370386 + ... + 73370391.

It is an arithmetic number, because the mean of its divisors is an integer number (146740778).

Almost surely, 2^440222331 is an apocalyptic number.

440222331 is a deficient number, since it is larger than the sum of its proper divisors (146740781).

440222331 is a wasteful number, since it uses less digits than its factorization.

440222331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146740780.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 440222331 is about 20981.4759013755. The cubic root of 440222331 is about 760.7185787964.

Adding to 440222331 its reverse (133222044), we get a palindrome (573444375).

The spelling of 440222331 in words is "four hundred forty million, two hundred twenty-two thousand, three hundred thirty-one".