9891422680 has 32 divisors (see below), whose sum is σ = 22263909840. Its totient is φ = 3955109760.

The previous prime is 9891422669. The next prime is 9891422683. The reversal of 9891422680 is 862241989.

It is a super-3 number, since 3×9891422680³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9891422683) 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, 67675 + ... + 156085.

Almost surely, 2^9891422680 is an apocalyptic number.

It is an amenable number.

9891422680 is an abundant number, since it is smaller than the sum of its proper divisors (12372487160).

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

9891422680 is a wasteful number, since it uses less digits than its factorization.

9891422680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91219 (or 91215 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 9891422680 is about 99455.6317158561. The cubic root of 9891422680 is about 2146.6088729516.

The spelling of 9891422680 in words is "nine billion, eight hundred ninety-one million, four hundred twenty-two thousand, six hundred eighty".