9120906 has 48 divisors (see below), whose sum is σ = 20765160. Its totient is φ = 2889600.

The previous prime is 9120889. The next prime is 9120941. The reversal of 9120906 is 6090219.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8910225 + 210681 = 2985^2 + 459^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9120906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52636 + ... + 52808.

Almost surely, 2^9120906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9120906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10382580).

9120906 is an abundant number, since it is smaller than the sum of its proper divisors (11644254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9120906 is a wasteful number, since it uses less digits than its factorization.

9120906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 9120906 is about 3020.0837736725. The cubic root of 9120906 is about 208.9357036105.

The spelling of 9120906 in words is "nine million, one hundred twenty thousand, nine hundred six".