9946021 has 4 divisors (see below), whose sum is σ = 10072000. Its totient is φ = 9820044.

The previous prime is 9945997. The next prime is 9946039. The reversal of 9946021 is 1206499.

It is a happy number.

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: 1206499 = 7 ⋅172357.

It is a cyclic number.

It is not a de Polignac number, because 9946021 - 2¹⁹ = 9421733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9949021) 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, 62871 + ... + 63028.

It is an arithmetic number, because the mean of its divisors is an integer number (2518000).

Almost surely, 2^9946021 is an apocalyptic number.

It is an amenable number.

9946021 is a deficient number, since it is larger than the sum of its proper divisors (125979).

9946021 is a wasteful number, since it uses less digits than its factorization.

9946021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125978.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 9946021 is about 3153.7312821482. The cubic root of 9946021 is about 215.0551219762.

The spelling of 9946021 in words is "nine million, nine hundred forty-six thousand, twenty-one".