9090226 has 4 divisors (see below), whose sum is σ = 13635342. Its totient is φ = 4545112.

The previous prime is 9090217. The next prime is 9090229. The reversal of 9090226 is 6220909.

It is a Cunningham number, because it is equal to 3015²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6220909 = 2293 ⋅2713.

It can be written as a sum of positive squares in only one way, i.e., 9090225 + 1 = 3015^2 + 1^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9090194 and 9090203.

It is not an unprimeable number, because it can be changed into a prime (9090229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2272555 + ... + 2272558.

Almost surely, 2^9090226 is an apocalyptic number.

9090226 is a deficient number, since it is larger than the sum of its proper divisors (4545116).

9090226 is a wasteful number, since it uses less digits than its factorization.

9090226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4545115.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 9090226 is about 3015.0001658375. Note that the first 3 decimals coincide. The cubic root of 9090226 is about 208.7011747117.

It can be divided in two parts, 9090 and 226, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 9090226 in words is "nine million, ninety thousand, two hundred twenty-six".