9809915044 has 12 divisors (see below), whose sum is σ = 17282569500. Its totient is φ = 4872038048.

The previous prime is 9809915029. The next prime is 9809915111. The reversal of 9809915044 is 4405199089.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4548153600 + 5261761444 = 67440^2 + 72538^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8229199 + ... + 8230390.

It is an arithmetic number, because the mean of its divisors is an integer number (1440214125).

Almost surely, 2^9809915044 is an apocalyptic number.

It is an amenable number.

9809915044 is a deficient number, since it is larger than the sum of its proper divisors (7472654456).

9809915044 is a wasteful number, since it uses less digits than its factorization.

9809915044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16459742 (or 16459740 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 9809915044 is about 99045.0152405461. The cubic root of 9809915044 is about 2140.6964167166.

The spelling of 9809915044 in words is "nine billion, eight hundred nine million, nine hundred fifteen thousand, forty-four".