9904238 has 4 divisors (see below), whose sum is σ = 14856360. Its totient is φ = 4952118.

The previous prime is 9904231. The next prime is 9904253. The reversal of 9904238 is 8324099.

It is a semiprime because it is the product of two primes.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9904198 and 9904207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9904231) 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, 2476058 + ... + 2476061.

It is an arithmetic number, because the mean of its divisors is an integer number (3714090).

Almost surely, 2^9904238 is an apocalyptic number.

9904238 is a deficient number, since it is larger than the sum of its proper divisors (4952122).

9904238 is a wasteful number, since it uses less digits than its factorization.

9904238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4952121.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 9904238 is about 3147.0999348607. The cubic root of 9904238 is about 214.7535521175.

The spelling of 9904238 in words is "nine million, nine hundred four thousand, two hundred thirty-eight".