9961098 has 24 divisors (see below), whose sum is σ = 22815072. Its totient is φ = 2840184.

The previous prime is 9961057. The next prime is 9961129. The reversal of 9961098 is 8901699.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20211 + ... + 20697.

It is an arithmetic number, because the mean of its divisors is an integer number (950628).

Almost surely, 2^9961098 is an apocalyptic number.

9961098 is an abundant number, since it is smaller than the sum of its proper divisors (12853974).

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

9961098 is an equidigital number, since it uses as much as digits as its factorization.

9961098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 42.

The square root of 9961098 is about 3156.1207201246. The cubic root of 9961098 is about 215.1637332186.

Multiplying 9961098 by its sum of digits (42), we get a square (418366116 = 20454²).

9961098 divided by its sum of digits (42) gives a square (237169 = 487²).

The spelling of 9961098 in words is "nine million, nine hundred sixty-one thousand, ninety-eight".