9129661 has 4 divisors (see below), whose sum is σ = 9143712. Its totient is φ = 9115612.

The previous prime is 9129647. The next prime is 9129683. The reversal of 9129661 is 1669219.

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 9129661 - 2⁹ = 9129149 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 (9129641) 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, 6001 + ... + 7366.

It is an arithmetic number, because the mean of its divisors is an integer number (2285928).

Almost surely, 2^9129661 is an apocalyptic number.

It is an amenable number.

9129661 is a deficient number, since it is larger than the sum of its proper divisors (14051).

9129661 is a wasteful number, since it uses less digits than its factorization.

9129661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14050.

The product of its digits is 5832, while the sum is 34.

The square root of 9129661 is about 3021.5328891144. The cubic root of 9129661 is about 209.0025334888.

The spelling of 9129661 in words is "nine million, one hundred twenty-nine thousand, six hundred sixty-one".