89432785 has 16 divisors (see below), whose sum is σ = 115781904. Its totient is φ = 65924352.

The previous prime is 89432747. The next prime is 89432797. The reversal of 89432785 is 58723498.

It can be written as a sum of positive squares in 8 ways, for example, as 18671041 + 70761744 = 4321^2 + 8412^2 .

It is not a de Polignac number, because 89432785 - 2¹⁹ = 88908497 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54639 + ... + 56251.

It is an arithmetic number, because the mean of its divisors is an integer number (7236369).

Almost surely, 2^89432785 is an apocalyptic number.

It is an amenable number.

89432785 is a deficient number, since it is larger than the sum of its proper divisors (26349119).

89432785 is a wasteful number, since it uses less digits than its factorization.

89432785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484.

The product of its digits is 483840, while the sum is 46.

The square root of 89432785 is about 9456.8908738549. The cubic root of 89432785 is about 447.1970380536.

The spelling of 89432785 in words is "eighty-nine million, four hundred thirty-two thousand, seven hundred eighty-five".