8438813 has 2 divisors, whose sum is σ = 8438814. Its totient is φ = 8438812.

The previous prime is 8438779. The next prime is 8438863. The reversal of 8438813 is 3188348.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7086244 + 1352569 = 2662^2 + 1163^2 .

It is a cyclic number.

It is not a de Polignac number, because 8438813 - 2¹⁰ = 8437789 is a prime.

It is equal to p₅₆₇₂₉₆ and since 8438813 and 567296 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 (8438863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4219406 + 4219407.

It is an arithmetic number, because the mean of its divisors is an integer number (4219407).

Almost surely, 2^8438813 is an apocalyptic number.

It is an amenable number.

8438813 is a deficient number, since it is larger than the sum of its proper divisors (1).

8438813 is an equidigital number, since it uses as much as digits as its factorization.

8438813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 35.

The square root of 8438813 is about 2904.9635109584. The cubic root of 8438813 is about 203.5918807868.

The spelling of 8438813 in words is "eight million, four hundred thirty-eight thousand, eight hundred thirteen".