9428209 has 8 divisors (see below), whose sum is σ = 10794560. Its totient is φ = 8066736.

The previous prime is 9428197. The next prime is 9428213. The reversal of 9428209 is 9028249.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9428209 - 2¹¹ = 9426161 is a prime.

It is a super-2 number, since 2×9428209² = 177782249895362, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (9428239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5182 + ... + 6760.

It is an arithmetic number, because the mean of its divisors is an integer number (1349320).

Almost surely, 2^9428209 is an apocalyptic number.

It is an amenable number.

9428209 is a deficient number, since it is larger than the sum of its proper divisors (1366351).

9428209 is a wasteful number, since it uses less digits than its factorization.

9428209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2439.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 9428209 is about 3070.5388777868. The cubic root of 9428209 is about 211.2563314046.

The spelling of 9428209 in words is "nine million, four hundred twenty-eight thousand, two hundred nine".