2259861444 has 135 divisors (see below), whose sum is σ = 6280200927. Its totient is φ = 708506352.

The previous prime is 2259861433. The next prime is 2259861491. The reversal of 2259861444 is 4441689522.

It is a happy number.

The square root of 2259861444 is 47538.

It is a perfect power (a square), and thus also a powerful number.

2259861444 is a `hidden beast` number, since 2 + 2 + 598 + 6 + 14 + 44 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 2259861444.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 16257927 + ... + 16258065.

Almost surely, 2^2259861444 is an apocalyptic number.

2259861444 is the 47538-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2259861444

2259861444 is an abundant number, since it is smaller than the sum of its proper divisors (4020339483).

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

2259861444 is a wasteful number, since it uses less digits than its factorization.

2259861444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332 (or 163 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The cubic root of 2259861444 is about 1312.2822992395.

The spelling of 2259861444 in words is "two billion, two hundred fifty-nine million, eight hundred sixty-one thousand, four hundred forty-four".