9904247 has 4 divisors (see below), whose sum is σ = 10145856. Its totient is φ = 9662640.

The previous prime is 9904231. The next prime is 9904253. The reversal of 9904247 is 7424099.

9904247 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: 7424099 = 109 ⋅68111.

It is a cyclic number.

It is not a de Polignac number, because 9904247 - 2⁴ = 9904231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9904207) 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, 120743 + ... + 120824.

It is an arithmetic number, because the mean of its divisors is an integer number (2536464).

Almost surely, 2^9904247 is an apocalyptic number.

9904247 is a deficient number, since it is larger than the sum of its proper divisors (241609).

9904247 is a wasteful number, since it uses less digits than its factorization.

9904247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241608.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 9904247 is about 3147.1013647482. The cubic root of 9904247 is about 214.7536171664.

The spelling of 9904247 in words is "nine million, nine hundred four thousand, two hundred forty-seven".