9691381 has 8 divisors (see below), whose sum is σ = 11110400. Its totient is φ = 8281008.

The previous prime is 9691351. The next prime is 9691393. The reversal of 9691381 is 1831969.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9691381 - 2¹³ = 9683189 is a prime.

It is a super-2 number, since 2×9691381² = 187845731374322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9691381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9691351) 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 7 ways as a sum of consecutive naturals, for example, 460 + ... + 4426.

It is an arithmetic number, because the mean of its divisors is an integer number (1388800).

Almost surely, 2^9691381 is an apocalyptic number.

It is an amenable number.

9691381 is a deficient number, since it is larger than the sum of its proper divisors (1419019).

9691381 is a wasteful number, since it uses less digits than its factorization.

9691381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4323.

The product of its digits is 11664, while the sum is 37.

The square root of 9691381 is about 3113.0982959104. The cubic root of 9691381 is about 213.2039381884.

The spelling of 9691381 in words is "nine million, six hundred ninety-one thousand, three hundred eighty-one".