9906235 has 4 divisors (see below), whose sum is σ = 11887488. Its totient is φ = 7924984.

The previous prime is 9906233. The next prime is 9906241. The reversal of 9906235 is 5326099.

It is a happy number.

9906235 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5326099 = 19 ⋅280321.

It is a cyclic number.

It is not a de Polignac number, because 9906235 - 2¹ = 9906233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9906235.

It is not an unprimeable number, because it can be changed into a prime (9906233) 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, 990619 + ... + 990628.

It is an arithmetic number, because the mean of its divisors is an integer number (2971872).

Almost surely, 2^9906235 is an apocalyptic number.

9906235 is a deficient number, since it is larger than the sum of its proper divisors (1981253).

9906235 is a wasteful number, since it uses less digits than its factorization.

9906235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981252.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 9906235 is about 3147.4171950982. The cubic root of 9906235 is about 214.7679847951.

It can be divided in two parts, 990 and 6235, that added together give a square (7225 = 85²).

The spelling of 9906235 in words is "nine million, nine hundred six thousand, two hundred thirty-five".