9961100 has 18 divisors (see below), whose sum is σ = 21615804. Its totient is φ = 3984400.

The previous prime is 9961057. The next prime is 9961129. The reversal of 9961100 is 11699.

It is an Ulam number.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 9961100.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49706 + ... + 49905.

It is an arithmetic number, because the mean of its divisors is an integer number (1200878).

Almost surely, 2^9961100 is an apocalyptic number.

It is an amenable number.

9961100 is an abundant number, since it is smaller than the sum of its proper divisors (11654704).

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

9961100 is a wasteful number, since it uses less digits than its factorization.

9961100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99625 (or 99618 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 9961100 is about 3156.1210369693. The cubic root of 9961100 is about 215.1637476188.

Adding to 9961100 its reverse (11699), we get a palindrome (9972799).

The spelling of 9961100 in words is "nine million, nine hundred sixty-one thousand, one hundred".