9899214091 has 8 divisors (see below), whose sum is σ = 10664425184. Its totient is φ = 9134536320.

The previous prime is 9899214089. The next prime is 9899214107. The reversal of 9899214091 is 1904129989.

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

It is not a de Polignac number, because 9899214091 - 2¹ = 9899214089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9899214991) 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, 94350 + ... + 169411.

It is an arithmetic number, because the mean of its divisors is an integer number (1333053148).

Almost surely, 2^9899214091 is an apocalyptic number.

9899214091 is a deficient number, since it is larger than the sum of its proper divisors (765211093).

9899214091 is a wasteful number, since it uses less digits than its factorization.

9899214091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266661.

The product of its (nonzero) digits is 419904, while the sum is 52.

The square root of 9899214091 is about 99494.7942909578. The cubic root of 9899214091 is about 2147.1723484336.

The spelling of 9899214091 in words is "nine billion, eight hundred ninety-nine million, two hundred fourteen thousand, ninety-one".