9877738444 has 72 divisors (see below), whose sum is σ = 20721765120. Its totient is φ = 4034875680.

The previous prime is 9877738439. The next prime is 9877738471. The reversal of 9877738444 is 4448377789.

It is a super-2 number, since 2×9877738444² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1800097 + ... + 1805575.

Almost surely, 2^9877738444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9877738444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10360882560).

9877738444 is an abundant number, since it is smaller than the sum of its proper divisors (10844026676).

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

9877738444 is a wasteful number, since it uses less digits than its factorization.

9877738444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5619 (or 5586 counting only the distinct ones).

The product of its digits is 37933056, while the sum is 61.

The square root of 9877738444 is about 99386.8122237553. The cubic root of 9877738444 is about 2145.6185112386.

The spelling of 9877738444 in words is "nine billion, eight hundred seventy-seven million, seven hundred thirty-eight thousand, four hundred forty-four".