9946391 has 16 divisors (see below), whose sum is σ = 12667200. Its totient is φ = 7596288.

The previous prime is 9946357. The next prime is 9946393. The reversal of 9946391 is 1936499.

It is a de Polignac number, because none of the positive numbers 2^k-9946391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9946393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 755 + ... + 4523.

It is an arithmetic number, because the mean of its divisors is an integer number (791700).

Almost surely, 2^9946391 is an apocalyptic number.

9946391 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

9946391 is a deficient number, since it is larger than the sum of its proper divisors (2720809).

9946391 is a wasteful number, since it uses less digits than its factorization.

9946391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3818.

The product of its digits is 52488, while the sum is 41.

The square root of 9946391 is about 3153.7899422758. The cubic root of 9946391 is about 215.0577886844.

The spelling of 9946391 in words is "nine million, nine hundred forty-six thousand, three hundred ninety-one".