8538869 has 2 divisors, whose sum is σ = 8538870. Its totient is φ = 8538868.

The previous prime is 8538853. The next prime is 8538889. The reversal of 8538869 is 9688358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6436369 + 2102500 = 2537^2 + 1450^2 .

It is a cyclic number.

It is not a de Polignac number, because 8538869 - 2⁴ = 8538853 is a prime.

It is a super-2 number, since 2×8538869² = 145824567598322, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8538839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4269434 + 4269435.

It is an arithmetic number, because the mean of its divisors is an integer number (4269435).

Almost surely, 2^8538869 is an apocalyptic number.

It is an amenable number.

8538869 is a deficient number, since it is larger than the sum of its proper divisors (1).

8538869 is an equidigital number, since it uses as much as digits as its factorization.

8538869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 47.

The square root of 8538869 is about 2922.1343227169. The cubic root of 8538869 is about 204.3933602698.

The spelling of 8538869 in words is "eight million, five hundred thirty-eight thousand, eight hundred sixty-nine".