9801945 has 32 divisors (see below), whose sum is σ = 18455040. Its totient is φ = 4919040.

The previous prime is 9801943. The next prime is 9801973. The reversal of 9801945 is 5491089.

It is not a de Polignac number, because 9801945 - 2¹ = 9801943 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9801941) 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 31 ways as a sum of consecutive naturals, for example, 160 + ... + 4430.

It is an arithmetic number, because the mean of its divisors is an integer number (576720).

Almost surely, 2^9801945 is an apocalyptic number.

It is an amenable number.

9801945 is a deficient number, since it is larger than the sum of its proper divisors (8653095).

9801945 is a wasteful number, since it uses less digits than its factorization.

9801945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4302 (or 4296 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 9801945 is about 3130.8058068172. The cubic root of 9801945 is about 214.0116524939.

The spelling of 9801945 in words is "nine million, eight hundred one thousand, nine hundred forty-five".