9994905 has 12 divisors (see below), whose sum is σ = 17324580. Its totient is φ = 5330592.

The previous prime is 9994871. The next prime is 9994913. The reversal of 9994905 is 5094999.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5419584 + 4575321 = 2328^2 + 2139^2 .

It is not a de Polignac number, because 9994905 - 2⁹ = 9994393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 222109 = 9994905 / (9 + 9 + 9 + 4 + 9 + 0 + 5).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111010 + ... + 111099.

It is an arithmetic number, because the mean of its divisors is an integer number (1443715).

Almost surely, 2^9994905 is an apocalyptic number.

It is an amenable number.

9994905 is a deficient number, since it is larger than the sum of its proper divisors (7329675).

9994905 is a wasteful number, since it uses less digits than its factorization.

9994905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222120 (or 222117 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 9994905 is about 3161.4719672962. The cubic root of 9994905 is about 215.4068733048.

The spelling of 9994905 in words is "nine million, nine hundred ninety-four thousand, nine hundred five".