9900771 has 16 divisors (see below), whose sum is σ = 13650336. Its totient is φ = 6379776.

The previous prime is 9900769. The next prime is 9900773. The reversal of 9900771 is 1770099.

9900771 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9900769) and next prime (9900773).

It is not a de Polignac number, because 9900771 - 2¹ = 9900769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9900773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11181 + ... + 12033.

It is an arithmetic number, because the mean of its divisors is an integer number (853146).

Almost surely, 2^9900771 is an apocalyptic number.

9900771 is a deficient number, since it is larger than the sum of its proper divisors (3749565).

9900771 is a wasteful number, since it uses less digits than its factorization.

9900771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982.

The product of its (nonzero) digits is 3969, while the sum is 33.

The square root of 9900771 is about 3146.5490620678. The cubic root of 9900771 is about 214.7284908774.

The spelling of 9900771 in words is "nine million, nine hundred thousand, seven hundred seventy-one".