9801156 has 12 divisors (see below), whose sum is σ = 22869392. Its totient is φ = 3267048.

The previous prime is 9801149. The next prime is 9801157. The reversal of 9801156 is 6511089.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (9801157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408370 + ... + 408393.

Almost surely, 2^9801156 is an apocalyptic number.

It is an amenable number.

9801156 is an abundant number, since it is smaller than the sum of its proper divisors (13068236).

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

9801156 is a wasteful number, since it uses less digits than its factorization.

9801156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816770 (or 816768 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 9801156 is about 3130.6797983825. The cubic root of 9801156 is about 214.0059101055.

The spelling of 9801156 in words is "nine million, eight hundred one thousand, one hundred fifty-six".