1321044444 has 48 divisors (see below), whose sum is σ = 3463437600. Its totient is φ = 435397248.

The previous prime is 1321044391. The next prime is 1321044481. The reversal of 1321044444 is 4444401231.

1321044444 is a `hidden beast` number, since 1 + 3 + 210 + 4 + 4 + 444 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59107 + ... + 78330.

It is an arithmetic number, because the mean of its divisors is an integer number (72154950).

Almost surely, 2^1321044444 is an apocalyptic number.

It is an amenable number.

1321044444 is an abundant number, since it is smaller than the sum of its proper divisors (2142393156).

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

1321044444 is a wasteful number, since it uses less digits than its factorization.

1321044444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137539 (or 137531 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 1321044444 is about 36346.1750944993. The cubic root of 1321044444 is about 1097.2505560954.

Adding to 1321044444 its reverse (4444401231), we get a palindrome (5765445675).

The spelling of 1321044444 in words is "one billion, three hundred twenty-one million, forty-four thousand, four hundred forty-four".