9612021 has 32 divisors (see below), whose sum is σ = 14394240. Its totient is φ = 5677056.

The previous prime is 9612007. The next prime is 9612047. The reversal of 9612021 is 1202169.

It is not a de Polignac number, because 9612021 - 2⁶ = 9611957 is a prime.

It is a Curzon number.

9612021 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9612721) 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 31 ways as a sum of consecutive naturals, for example, 99045 + ... + 99141.

It is an arithmetic number, because the mean of its divisors is an integer number (449820).

Almost surely, 2^9612021 is an apocalyptic number.

It is an amenable number.

9612021 is a deficient number, since it is larger than the sum of its proper divisors (4782219).

9612021 is a wasteful number, since it uses less digits than its factorization.

9612021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 9612021 is about 3100.3259506058. The cubic root of 9612021 is about 212.6203866869.

It can be divided in two parts, 96120 and 21, that added together give a triangular number (96141 = T₄₃₈).

The spelling of 9612021 in words is "nine million, six hundred twelve thousand, twenty-one".