9980937944 has 8 divisors (see below), whose sum is σ = 18714258660. Its totient is φ = 4990468968.

The previous prime is 9980937919. The next prime is 9980937979. The reversal of 9980937944 is 4497390899.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623808614 + ... + 623808629.

Almost surely, 2^9980937944 is an apocalyptic number.

It is an amenable number.

9980937944 is a deficient number, since it is larger than the sum of its proper divisors (8733320716).

9980937944 is a wasteful number, since it uses less digits than its factorization.

9980937944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247617249 (or 1247617245 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 62.

The square root of 9980937944 is about 99904.6442564108. The cubic root of 9980937944 is about 2153.0648874641.

The spelling of 9980937944 in words is "nine billion, nine hundred eighty million, nine hundred thirty-seven thousand, nine hundred forty-four".