89405585 has 4 divisors (see below), whose sum is σ = 107286708. Its totient is φ = 71524464.

The previous prime is 89405551. The next prime is 89405593. The reversal of 89405585 is 58550498.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41075281 + 48330304 = 6409^2 + 6952^2 .

It is a cyclic number.

It is not a de Polignac number, because 89405585 - 2¹⁰ = 89404561 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 8940554 + ... + 8940563.

It is an arithmetic number, because the mean of its divisors is an integer number (26821677).

Almost surely, 2^89405585 is an apocalyptic number.

It is an amenable number.

89405585 is a deficient number, since it is larger than the sum of its proper divisors (17881123).

89405585 is a wasteful number, since it uses less digits than its factorization.

89405585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17881122.

The product of its (nonzero) digits is 288000, while the sum is 44.

The square root of 89405585 is about 9455.4526597091. The cubic root of 89405585 is about 447.1516967663.

The spelling of 89405585 in words is "eighty-nine million, four hundred five thousand, five hundred eighty-five".