89434809 has 12 divisors (see below), whose sum is σ = 132675556. Its totient is φ = 58011552.

The previous prime is 89434801. The next prime is 89434823. The reversal of 89434809 is 90843498.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 49744809 + 39690000 = 7053^2 + 6300^2 .

It is not a de Polignac number, because 89434809 - 2³ = 89434801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89434801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133954 + ... + 134619.

Almost surely, 2^89434809 is an apocalyptic number.

It is an amenable number.

89434809 is a deficient number, since it is larger than the sum of its proper divisors (43240747).

89434809 is a wasteful number, since it uses less digits than its factorization.

89434809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268616 (or 268613 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 89434809 is about 9456.9978851642. The cubic root of 89434809 is about 447.2004116113.

The spelling of 89434809 in words is "eighty-nine million, four hundred thirty-four thousand, eight hundred nine".