9994581 has 24 divisors (see below), whose sum is σ = 15365376. Its totient is φ = 6246240.

The previous prime is 9994573. The next prime is 9994603. The reversal of 9994581 is 1854999.

It is not a de Polignac number, because 9994581 - 2³ = 9994573 is a prime.

It is a super-2 number, since 2×9994581² = 199783298731122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9994681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10516 + ... + 11426.

It is an arithmetic number, because the mean of its divisors is an integer number (640224).

Almost surely, 2^9994581 is an apocalyptic number.

It is an amenable number.

9994581 is a deficient number, since it is larger than the sum of its proper divisors (5370795).

9994581 is a wasteful number, since it uses less digits than its factorization.

9994581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993 (or 990 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 9994581 is about 3161.4207249273. The cubic root of 9994581 is about 215.4045456995.

The spelling of 9994581 in words is "nine million, nine hundred ninety-four thousand, five hundred eighty-one".