9109901 has 4 divisors (see below), whose sum is σ = 9119100. Its totient is φ = 9100704.

The previous prime is 9109883. The next prime is 9109927. The reversal of 9109901 is 1099019.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1099019 = 991 ⋅1109.

It can be written as a sum of positive squares in 2 ways, for example, as 265225 + 8844676 = 515^2 + 2974^2 .

It is a cyclic number.

It is not a de Polignac number, because 9109901 - 2¹⁰ = 9108877 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 (9109201) 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, 2906 + ... + 5163.

It is an arithmetic number, because the mean of its divisors is an integer number (2279775).

Almost surely, 2^9109901 is an apocalyptic number.

It is an amenable number.

9109901 is a deficient number, since it is larger than the sum of its proper divisors (9199).

9109901 is a wasteful number, since it uses less digits than its factorization.

9109901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9198.

The product of its (nonzero) digits is 729, while the sum is 29.

The square root of 9109901 is about 3018.2612544311. The cubic root of 9109901 is about 208.8516380287.

The spelling of 9109901 in words is "nine million, one hundred nine thousand, nine hundred one".