9904894 has 4 divisors (see below), whose sum is σ = 14857344. Its totient is φ = 4952446.

The previous prime is 9904891. The next prime is 9904901. The reversal of 9904894 is 4984099.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4984099 = 19 ⋅262321.

It is a self number, because there is not a number n which added to its sum of digits gives 9904894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9904891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2476222 + ... + 2476225.

It is an arithmetic number, because the mean of its divisors is an integer number (3714336).

Almost surely, 2^9904894 is an apocalyptic number.

9904894 is a deficient number, since it is larger than the sum of its proper divisors (4952450).

9904894 is a wasteful number, since it uses less digits than its factorization.

9904894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4952449.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 9904894 is about 3147.2041560725. The cubic root of 9904894 is about 214.7582933612.

The spelling of 9904894 in words is "nine million, nine hundred four thousand, eight hundred ninety-four".