2144244440 has 32 divisors (see below), whose sum is σ = 5195670480. Its totient is φ = 791720832.

The previous prime is 2144244439. The next prime is 2144244463. The reversal of 2144244440 is 444424412.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2061254 + ... + 2062293.

Almost surely, 2^2144244440 is an apocalyptic number.

2144244440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2144244440 is an abundant number, since it is smaller than the sum of its proper divisors (3051426040).

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

2144244440 is a wasteful number, since it uses less digits than its factorization.

2144244440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4123571 (or 4123567 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 29.

The square root of 2144244440 is about 46305.9870859050. The cubic root of 2144244440 is about 1289.5101479261.

Adding to 2144244440 its reverse (444424412), we get a palindrome (2588668852).

The spelling of 2144244440 in words is "two billion, one hundred forty-four million, two hundred forty-four thousand, four hundred forty".