8609961 has 4 divisors (see below), whose sum is σ = 11479952. Its totient is φ = 5739972.

The previous prime is 8609927. The next prime is 8609963. The reversal of 8609961 is 1699068.

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.

It is not a de Polignac number, because 8609961 - 2⁷ = 8609833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8609963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1434991 + ... + 1434996.

It is an arithmetic number, because the mean of its divisors is an integer number (2869988).

Almost surely, 2^8609961 is an apocalyptic number.

It is an amenable number.

8609961 is a deficient number, since it is larger than the sum of its proper divisors (2869991).

8609961 is a wasteful number, since it uses less digits than its factorization.

8609961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2869990.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 8609961 is about 2934.2735046345. The cubic root of 8609961 is about 204.9590320672.

The spelling of 8609961 in words is "eight million, six hundred nine thousand, nine hundred sixty-one".