9899771 has 8 divisors (see below), whose sum is σ = 11336160. Its totient is φ = 8468928.

The previous prime is 9899753. The next prime is 9899783. The reversal of 9899771 is 1779989.

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 9899771 - 2²² = 5705467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9899731) 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, 3695 + ... + 5783.

It is an arithmetic number, because the mean of its divisors is an integer number (1417020).

Almost surely, 2^9899771 is an apocalyptic number.

9899771 is a deficient number, since it is larger than the sum of its proper divisors (1436389).

9899771 is a wasteful number, since it uses less digits than its factorization.

9899771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2773.

The product of its digits is 285768, while the sum is 50.

The square root of 9899771 is about 3146.3901538112. The cubic root of 9899771 is about 214.7212612815.

The spelling of 9899771 in words is "nine million, eight hundred ninety-nine thousand, seven hundred seventy-one".