8385381 has 6 divisors (see below), whose sum is σ = 12112230. Its totient is φ = 5590248.

The previous prime is 8385373. The next prime is 8385383. The reversal of 8385381 is 1835838.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8381025 + 4356 = 2895^2 + 66^2 .

It is not a de Polignac number, because 8385381 - 2³ = 8385373 is a prime.

It is a super-2 number, since 2×8385381² = 140629229030322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8385383) 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 5 ways as a sum of consecutive naturals, for example, 465846 + ... + 465863.

It is an arithmetic number, because the mean of its divisors is an integer number (2018705).

Almost surely, 2^8385381 is an apocalyptic number.

It is an amenable number.

8385381 is a deficient number, since it is larger than the sum of its proper divisors (3726849).

8385381 is a wasteful number, since it uses less digits than its factorization.

8385381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931715 (or 931712 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 8385381 is about 2895.7522338764. The cubic root of 8385381 is about 203.1612767082.

The spelling of 8385381 in words is "eight million, three hundred eighty-five thousand, three hundred eighty-one".