89069809 has 2 divisors, whose sum is σ = 89069810. Its totient is φ = 89069808.

The previous prime is 89069791. The next prime is 89069831. The reversal of 89069809 is 90896098.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52200625 + 36869184 = 7225^2 + 6072^2 .

It is a cyclic number.

It is not a de Polignac number, because 89069809 - 2²⁵ = 55515377 is a prime.

It is not a weakly prime, because it can be changed into another prime (89069009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44534904 + 44534905.

It is an arithmetic number, because the mean of its divisors is an integer number (44534905).

Almost surely, 2^89069809 is an apocalyptic number.

It is an amenable number.

89069809 is a deficient number, since it is larger than the sum of its proper divisors (1).

89069809 is an equidigital number, since it uses as much as digits as its factorization.

89069809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 49.

The square root of 89069809 is about 9437.6802764239. The cubic root of 89069809 is about 446.5912129049.

The spelling of 89069809 in words is "eighty-nine million, sixty-nine thousand, eight hundred nine".