9909042736 has 10 divisors (see below), whose sum is σ = 19198770332. Its totient is φ = 4954521360.

The previous prime is 9909042733. The next prime is 9909042761. The reversal of 9909042736 is 6372409099.

It is a self number, because there is not a number n which added to its sum of digits gives 9909042736.

It is not an unprimeable number, because it can be changed into a prime (9909042733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309657570 + ... + 309657601.

Almost surely, 2^9909042736 is an apocalyptic number.

It is an amenable number.

9909042736 is a deficient number, since it is larger than the sum of its proper divisors (9289727596).

9909042736 is a wasteful number, since it uses less digits than its factorization.

9909042736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619315179 (or 619315173 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 49.

The square root of 9909042736 is about 99544.1747969212. The cubic root of 9909042736 is about 2147.8827352708.

The spelling of 9909042736 in words is "nine billion, nine hundred nine million, forty-two thousand, seven hundred thirty-six".