9949138208 has 24 divisors (see below), whose sum is σ = 20739564972. Its totient is φ = 4681947136.

The previous prime is 9949138183. The next prime is 9949138229. The reversal of 9949138208 is 8028319499.

It can be written as a sum of positive squares in 2 ways, for example, as 9648739984 + 300398224 = 98228^2 + 17332^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 9949138208.

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, 9143885 + ... + 9144972.

Almost surely, 2^9949138208 is an apocalyptic number.

It is an amenable number.

9949138208 is an abundant number, since it is smaller than the sum of its proper divisors (10790426764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9949138208 is a wasteful number, since it uses less digits than its factorization.

9949138208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18288884 (or 18288876 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 53.

The square root of 9949138208 is about 99745.3668497941. The cubic root of 9949138208 is about 2150.7758662222.

The spelling of 9949138208 in words is "nine billion, nine hundred forty-nine million, one hundred thirty-eight thousand, two hundred eight".