1440221132 has 18 divisors (see below), whose sum is σ = 2931879132. Its totient is φ = 617237544.

The previous prime is 1440221129. The next prime is 1440221137. The reversal of 1440221132 is 2311220441.

It is a super-2 number, since 2×1440221132² = 4148473818118722848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1440221137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3673838 + ... + 3674229.

It is an arithmetic number, because the mean of its divisors is an integer number (162882174).

Almost surely, 2^1440221132 is an apocalyptic number.

It is an amenable number.

1440221132 is an abundant number, since it is smaller than the sum of its proper divisors (1491658000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1440221132 is a wasteful number, since it uses less digits than its factorization.

1440221132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7348085 (or 7348076 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1440221132 is about 37950.2454801020. The cubic root of 1440221132 is about 1129.3010353595.

Adding to 1440221132 its reverse (2311220441), we get a palindrome (3751441573).

The spelling of 1440221132 in words is "one billion, four hundred forty million, two hundred twenty-one thousand, one hundred thirty-two".