9909155716 has 12 divisors (see below), whose sum is σ = 17370269532. Its totient is φ = 4946221568.

The previous prime is 9909155713. The next prime is 9909155717. The reversal of 9909155716 is 6175519099.

It can be written as a sum of positive squares in 2 ways, for example, as 4449423616 + 5459732100 = 66704^2 + 73890^2 .

It is not an unprimeable number, because it can be changed into a prime (9909155713) 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, 2086405 + ... + 2091148.

It is an arithmetic number, because the mean of its divisors is an integer number (1447522461).

Almost surely, 2^9909155716 is an apocalyptic number.

It is an amenable number.

9909155716 is a deficient number, since it is larger than the sum of its proper divisors (7461113816).

9909155716 is a wasteful number, since it uses less digits than its factorization.

9909155716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4178150 (or 4178148 counting only the distinct ones).

The product of its (nonzero) digits is 765450, while the sum is 52.

The square root of 9909155716 is about 99544.7422820512. The cubic root of 9909155716 is about 2147.8908984161.

The spelling of 9909155716 in words is "nine billion, nine hundred nine million, one hundred fifty-five thousand, seven hundred sixteen".