8355381 has 16 divisors (see below), whose sum is σ = 11876544. Its totient is φ = 5206784.

The previous prime is 8355379. The next prime is 8355401. The reversal of 8355381 is 1835538.

It is a cyclic number.

It is not a de Polignac number, because 8355381 - 2¹ = 8355379 is a prime.

It is a super-2 number, since 2×8355381² = 139624783310322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8355341) 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 15 ways as a sum of consecutive naturals, for example, 8350 + ... + 9296.

It is an arithmetic number, because the mean of its divisors is an integer number (742284).

Almost surely, 2^8355381 is an apocalyptic number.

It is an amenable number.

8355381 is a deficient number, since it is larger than the sum of its proper divisors (3521163).

8355381 is a wasteful number, since it uses less digits than its factorization.

8355381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140.

The product of its digits is 14400, while the sum is 33.

The square root of 8355381 is about 2890.5675913218. The cubic root of 8355381 is about 202.9187068838.

It can be divided in two parts, 835 and 5381, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 8355381 in words is "eight million, three hundred fifty-five thousand, three hundred eighty-one".