8945813 has 2 divisors, whose sum is σ = 8945814. Its totient is φ = 8945812.

The previous prime is 8945809. The next prime is 8945819. The reversal of 8945813 is 3185498.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8898289 + 47524 = 2983^2 + 218^2 .

It is a cyclic number.

It is not a de Polignac number, because 8945813 - 2² = 8945809 is a prime.

It is a Chen prime.

It is equal to p₅₉₉₀₉₆ and since 8945813 and 599096 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8945819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4472906 + 4472907.

It is an arithmetic number, because the mean of its divisors is an integer number (4472907).

Almost surely, 2^8945813 is an apocalyptic number.

It is an amenable number.

8945813 is a deficient number, since it is larger than the sum of its proper divisors (1).

8945813 is an equidigital number, since it uses as much as digits as its factorization.

8945813 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 8945813 is about 2990.9551985946. The cubic root of 8945813 is about 207.5900842702.

The spelling of 8945813 in words is "eight million, nine hundred forty-five thousand, eight hundred thirteen".