9109381 has 8 divisors (see below), whose sum is σ = 9438464. Its totient is φ = 8782560.

The previous prime is 9109369. The next prime is 9109427. The reversal of 9109381 is 1839019.

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 9109381 - 2¹³ = 9101189 is a prime.

It is a super-2 number, since 2×9109381² = 165961644406322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9109301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13846 + ... + 14488.

It is an arithmetic number, because the mean of its divisors is an integer number (1179808).

Almost surely, 2^9109381 is an apocalyptic number.

It is an amenable number.

9109381 is a deficient number, since it is larger than the sum of its proper divisors (329083).

9109381 is a wasteful number, since it uses less digits than its factorization.

9109381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 9109381 is about 3018.1751108907. The cubic root of 9109381 is about 208.8476641502.

The spelling of 9109381 in words is "nine million, one hundred nine thousand, three hundred eighty-one".