9109961 has 4 divisors (see below), whose sum is σ = 10411392. Its totient is φ = 7808532.

The previous prime is 9109957. The next prime is 9109967. The reversal of 9109961 is 1699019.

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 a cyclic number.

It is not a de Polignac number, because 9109961 - 2² = 9109957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9109967) 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, 650705 + ... + 650718.

It is an arithmetic number, because the mean of its divisors is an integer number (2602848).

Almost surely, 2^9109961 is an apocalyptic number.

It is an amenable number.

9109961 is a deficient number, since it is larger than the sum of its proper divisors (1301431).

9109961 is a wasteful number, since it uses less digits than its factorization.

9109961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301430.

The product of its (nonzero) digits is 4374, while the sum is 35.

The square root of 9109961 is about 3018.2711939122. The cubic root of 9109961 is about 208.8520965434.

The spelling of 9109961 in words is "nine million, one hundred nine thousand, nine hundred sixty-one".