9968391 has 12 divisors (see below), whose sum is σ = 14863680. Its totient is φ = 6431040.

The previous prime is 9968381. The next prime is 9968411. The reversal of 9968391 is 1938699.

It is not a de Polignac number, because 9968391 - 2⁵ = 9968359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9968351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17586 + ... + 18143.

It is an arithmetic number, because the mean of its divisors is an integer number (1238640).

Almost surely, 2^9968391 is an apocalyptic number.

9968391 is a deficient number, since it is larger than the sum of its proper divisors (4895289).

9968391 is a wasteful number, since it uses less digits than its factorization.

9968391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35766 (or 35763 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 9968391 is about 3157.2758827825. The cubic root of 9968391 is about 215.2162309888.

The spelling of 9968391 in words is "nine million, nine hundred sixty-eight thousand, three hundred ninety-one".