9994381 has 4 divisors (see below), whose sum is σ = 10001052. Its totient is φ = 9987712.

The previous prime is 9994379. The next prime is 9994393. The reversal of 9994381 is 1834999.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7070281 + 2924100 = 2659^2 + 1710^2 .

It is a cyclic number.

It is not a de Polignac number, because 9994381 - 2¹ = 9994379 is a prime.

It is a super-2 number, since 2×9994381² = 199775303146322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9994321) 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, 75 + ... + 4471.

It is an arithmetic number, because the mean of its divisors is an integer number (2500263).

Almost surely, 2^9994381 is an apocalyptic number.

It is an amenable number.

9994381 is a deficient number, since it is larger than the sum of its proper divisors (6671).

9994381 is a wasteful number, since it uses less digits than its factorization.

9994381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6670.

The product of its digits is 69984, while the sum is 43.

The square root of 9994381 is about 3161.3890934208. The cubic root of 9994381 is about 215.4031088810.

The spelling of 9994381 in words is "nine million, nine hundred ninety-four thousand, three hundred eighty-one".