9746921 has 4 divisors (see below), whose sum is σ = 9798144. Its totient is φ = 9695700.

The previous prime is 9746909. The next prime is 9746983. The reversal of 9746921 is 1296479.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1296479 = 977 ⋅1327.

It is a cyclic number.

It is not a de Polignac number, because 9746921 - 2¹⁸ = 9484777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9746521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25325 + ... + 25706.

It is an arithmetic number, because the mean of its divisors is an integer number (2449536).

Almost surely, 2^9746921 is an apocalyptic number.

It is an amenable number.

9746921 is a deficient number, since it is larger than the sum of its proper divisors (51223).

9746921 is a wasteful number, since it uses less digits than its factorization.

9746921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51222.

The product of its digits is 27216, while the sum is 38.

The square root of 9746921 is about 3122.0059256830. The cubic root of 9746921 is about 213.6104436556.

The spelling of 9746921 in words is "nine million, seven hundred forty-six thousand, nine hundred twenty-one".