9881600921 has 8 divisors (see below), whose sum is σ = 10463974080. Its totient is φ = 9305456688.

The previous prime is 9881600917. The next prime is 9881600941. The reversal of 9881600921 is 1290061889.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9881600921 - 2² = 9881600917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9881600941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1553966 + ... + 1560311.

It is an arithmetic number, because the mean of its divisors is an integer number (1307996760).

Almost surely, 2^9881600921 is an apocalyptic number.

It is an amenable number.

9881600921 is a deficient number, since it is larger than the sum of its proper divisors (582373159).

9881600921 is a wasteful number, since it uses less digits than its factorization.

9881600921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3114463.

The product of its (nonzero) digits is 62208, while the sum is 44.

The square root of 9881600921 is about 99406.2418613640. The cubic root of 9881600921 is about 2145.8981407722.

The spelling of 9881600921 in words is "nine billion, eight hundred eighty-one million, six hundred thousand, nine hundred twenty-one".