9125806 has 4 divisors (see below), whose sum is σ = 13688712. Its totient is φ = 4562902.

The previous prime is 9125801. The next prime is 9125819. The reversal of 9125806 is 6085219.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6085219 = 7 ⋅869317.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9125801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2281450 + ... + 2281453.

It is an arithmetic number, because the mean of its divisors is an integer number (3422178).

Almost surely, 2^9125806 is an apocalyptic number.

9125806 is a deficient number, since it is larger than the sum of its proper divisors (4562906).

9125806 is a wasteful number, since it uses less digits than its factorization.

9125806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4562905.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 9125806 is about 3020.8949005220. The cubic root of 9125806 is about 208.9731122359.

The spelling of 9125806 in words is "nine million, one hundred twenty-five thousand, eight hundred six".