9936381 has 32 divisors (see below), whose sum is σ = 17273088. Its totient is φ = 4930560.

The previous prime is 9936371. The next prime is 9936419. The reversal of 9936381 is 1836399.

It is not a de Polignac number, because 9936381 - 2⁵ = 9936349 is a prime.

It is a super-2 number, since 2×9936381² = 197463334754322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9936361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3571 + ... + 5711.

It is an arithmetic number, because the mean of its divisors is an integer number (539784).

Almost surely, 2^9936381 is an apocalyptic number.

9936381 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

9936381 is a deficient number, since it is larger than the sum of its proper divisors (7336707).

9936381 is a wasteful number, since it uses less digits than its factorization.

9936381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181.

The product of its digits is 34992, while the sum is 39.

The square root of 9936381 is about 3152.2025632881. The cubic root of 9936381 is about 214.9856200947.

The spelling of 9936381 in words is "nine million, nine hundred thirty-six thousand, three hundred eighty-one".