1444244140 has 12 divisors (see below), whose sum is σ = 3032912736. Its totient is φ = 577697648.

The previous prime is 1444244119. The next prime is 1444244171. The reversal of 1444244140 is 414424441.

It is a super-2 number, since 2×1444244140² = 4171682271848679200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1444244099 and 1444244108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36106084 + ... + 36106123.

It is an arithmetic number, because the mean of its divisors is an integer number (252742728).

Almost surely, 2^1444244140 is an apocalyptic number.

1444244140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1444244140 is an abundant number, since it is smaller than the sum of its proper divisors (1588668596).

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

1444244140 is a wasteful number, since it uses less digits than its factorization.

1444244140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72212216 (or 72212214 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

The square root of 1444244140 is about 38003.2122326521. The cubic root of 1444244140 is about 1130.3515600207.

Adding to 1444244140 its reverse (414424441), we get a palindrome (1858668581).

The spelling of 1444244140 in words is "one billion, four hundred forty-four million, two hundred forty-four thousand, one hundred forty".