9872807044 has 9 divisors (see below), whose sum is σ = 17277760101. Its totient is φ = 4936304160.

The previous prime is 9872807033. The next prime is 9872807083. The reversal of 9872807044 is 4407082789.

The square root of 9872807044 is 99362.

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

It can be written as a sum of positive squares in only one way, i.e., 7614656644 + 2258150400 = 87262^2 + 47520^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 173884 + ... + 223564.

Almost surely, 2^9872807044 is an apocalyptic number.

9872807044 is the 99362-nd square number.

It is an amenable number.

9872807044 is a deficient number, since it is larger than the sum of its proper divisors (7404953057).

9872807044 is an frugal number, since it uses more digits than its factorization.

9872807044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99366 (or 49683 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 49.

The cubic root of 9872807044 is about 2145.2613895320.

Multiplying 9872807044 by its sum of digits (49), we get a square (483767545156 = 695534²).

The spelling of 9872807044 in words is "nine billion, eight hundred seventy-two million, eight hundred seven thousand, forty-four".