8609121 has 6 divisors (see below), whose sum is σ = 12435410. Its totient is φ = 5739408.

The previous prime is 8609119. The next prime is 8609129. The reversal of 8609121 is 1219068.

It can be written as a sum of positive squares in only one way, i.e., 8294400 + 314721 = 2880^2 + 561^2 .

It is not a de Polignac number, because 8609121 - 2¹ = 8609119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8609129) 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 5 ways as a sum of consecutive naturals, for example, 478276 + ... + 478293.

Almost surely, 2^8609121 is an apocalyptic number.

It is an amenable number.

8609121 is a deficient number, since it is larger than the sum of its proper divisors (3826289).

8609121 is a wasteful number, since it uses less digits than its factorization.

8609121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956575 (or 956572 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 8609121 is about 2934.1303652019. The cubic root of 8609121 is about 204.9523664858.

The spelling of 8609121 in words is "eight million, six hundred nine thousand, one hundred twenty-one".