9628099909 has 4 divisors (see below), whose sum is σ = 9628347904. Its totient is φ = 9627851916.

The previous prime is 9628099907. The next prime is 9628099937. The reversal of 9628099909 is 9099908269.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9628099909 - 2¹ = 9628099907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9628099907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51717 + ... + 148090.

It is an arithmetic number, because the mean of its divisors is an integer number (2407086976).

Almost surely, 2^9628099909 is an apocalyptic number.

It is an amenable number.

9628099909 is a deficient number, since it is larger than the sum of its proper divisors (247995).

9628099909 is a wasteful number, since it uses less digits than its factorization.

9628099909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247994.

The product of its (nonzero) digits is 5668704, while the sum is 61.

The square root of 9628099909 is about 98122.8816790457. The cubic root of 9628099909 is about 2127.3887718125.

The spelling of 9628099909 in words is "nine billion, six hundred twenty-eight million, ninety-nine thousand, nine hundred nine".