9994391 has 4 divisors (see below), whose sum is σ = 10902984. Its totient is φ = 9085800.

The previous prime is 9994379. The next prime is 9994393. The reversal of 9994391 is 1934999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1934999 = 11 ⋅175909.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9994391 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 (9994393) 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, 454280 + ... + 454301.

It is an arithmetic number, because the mean of its divisors is an integer number (2725746).

Almost surely, 2^9994391 is an apocalyptic number.

9994391 is a deficient number, since it is larger than the sum of its proper divisors (908593).

9994391 is a wasteful number, since it uses less digits than its factorization.

9994391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908592.

The product of its digits is 78732, while the sum is 44.

The square root of 9994391 is about 3161.3906750036. The cubic root of 9994391 is about 215.4031807224.

The spelling of 9994391 in words is "nine million, nine hundred ninety-four thousand, three hundred ninety-one".