1440344442 has 8 divisors (see below), whose sum is σ = 2880688896. Its totient is φ = 480114812.

The previous prime is 1440344393. The next prime is 1440344449. The reversal of 1440344442 is 2444430441.

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

1440344442 is an admirable number.

It is a super-2 number, since 2×1440344442² = 4149184223200582728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1440344449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120028698 + ... + 120028709.

It is an arithmetic number, because the mean of its divisors is an integer number (360086112).

Almost surely, 2^1440344442 is an apocalyptic number.

1440344442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1440344442 is a wasteful number, since it uses less digits than its factorization.

1440344442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240057412.

The product of its (nonzero) digits is 24576, while the sum is 30.

The square root of 1440344442 is about 37951.8700725010. The cubic root of 1440344442 is about 1129.3332642382. Note that the first 3 decimals are identical.

Adding to 1440344442 its reverse (2444430441), we get a palindrome (3884774883).

The spelling of 1440344442 in words is "one billion, four hundred forty million, three hundred forty-four thousand, four hundred forty-two".