89208869 has 2 divisors, whose sum is σ = 89208870. Its totient is φ = 89208868.

The previous prime is 89208859. The next prime is 89208913. The reversal of 89208869 is 96880298.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53949025 + 35259844 = 7345^2 + 5938^2 .

It is a cyclic number.

It is not a de Polignac number, because 89208869 - 2⁴ = 89208853 is a prime.

It is a super-2 number, since 2×89208869² = 15916444616518322, 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 (89208859) 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, 44604434 + 44604435.

It is an arithmetic number, because the mean of its divisors is an integer number (44604435).

Almost surely, 2^89208869 is an apocalyptic number.

It is an amenable number.

89208869 is a deficient number, since it is larger than the sum of its proper divisors (1).

89208869 is an equidigital number, since it uses as much as digits as its factorization.

89208869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 89208869 is about 9445.0446796190. The cubic root of 89208869 is about 446.8235051687.

The spelling of 89208869 in words is "eighty-nine million, two hundred eight thousand, eight hundred sixty-nine".