8945381 has 2 divisors, whose sum is σ = 8945382. Its totient is φ = 8945380.

The previous prime is 8945353. The next prime is 8945401. The reversal of 8945381 is 1835498.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8797156 + 148225 = 2966^2 + 385^2 .

It is a cyclic number.

It is not a de Polignac number, because 8945381 - 2¹⁰ = 8944357 is a prime.

It is a super-2 number, since 2×8945381² = 160039682470322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8945351) 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 as a sum of consecutive naturals, namely, 4472690 + 4472691.

It is an arithmetic number, because the mean of its divisors is an integer number (4472691).

Almost surely, 2^8945381 is an apocalyptic number.

It is an amenable number.

8945381 is a deficient number, since it is larger than the sum of its proper divisors (1).

8945381 is an equidigital number, since it uses as much as digits as its factorization.

8945381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 38.

The square root of 8945381 is about 2990.8829799910. The cubic root of 8945381 is about 207.5867426562.

The spelling of 8945381 in words is "eight million, nine hundred forty-five thousand, three hundred eighty-one".