1440222243 has 8 divisors (see below), whose sum is σ = 1921297488. Its totient is φ = 959647584.

The previous prime is 1440222239. The next prime is 1440222307. The reversal of 1440222243 is 3422220441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1440222243 - 2² = 1440222239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1440222943) 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 7 ways as a sum of consecutive naturals, for example, 118380 + ... + 129977.

It is an arithmetic number, because the mean of its divisors is an integer number (240162186).

Almost surely, 2^1440222243 is an apocalyptic number.

1440222243 is a deficient number, since it is larger than the sum of its proper divisors (481075245).

1440222243 is a wasteful number, since it uses less digits than its factorization.

1440222243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250293.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1440222243 is about 37950.2601176856. The cubic root of 1440222243 is about 1129.3013257439.

Adding to 1440222243 its reverse (3422220441), we get a palindrome (4862442684).

The spelling of 1440222243 in words is "one billion, four hundred forty million, two hundred twenty-two thousand, two hundred forty-three".