9904949650 has 12 divisors (see below), whose sum is σ = 18423206442. Its totient is φ = 3961979840.

The previous prime is 9904949633. The next prime is 9904949687. The reversal of 9904949650 is 569494099.

It can be written as a sum of positive squares in 3 ways, for example, as 5534020881 + 4370928769 = 74391^2 + 66113^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9904949591 and 9904949600.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99049447 + ... + 99049546.

Almost surely, 2^9904949650 is an apocalyptic number.

9904949650 is a deficient number, since it is larger than the sum of its proper divisors (8518256792).

9904949650 is a wasteful number, since it uses less digits than its factorization.

9904949650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198099005 (or 198099000 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 55.

The square root of 9904949650 is about 99523.6135296544. The cubic root of 9904949650 is about 2147.5869556228.

The spelling of 9904949650 in words is "nine billion, nine hundred four million, nine hundred forty-nine thousand, six hundred fifty".