89785471 has 4 divisors (see below), whose sum is σ = 90255744. Its totient is φ = 89315200.

The previous prime is 89785441. The next prime is 89785481. The reversal of 89785471 is 17458798.

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

It is a cyclic number.

It is not a de Polignac number, because 89785471 - 2⁵ = 89785439 is a prime.

It is a super-3 number, since 3×89785471³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89785411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234850 + ... + 235231.

It is an arithmetic number, because the mean of its divisors is an integer number (22563936).

Almost surely, 2^89785471 is an apocalyptic number.

89785471 is a deficient number, since it is larger than the sum of its proper divisors (470273).

89785471 is a wasteful number, since it uses less digits than its factorization.

89785471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470272.

The product of its digits is 564480, while the sum is 49.

The square root of 89785471 is about 9475.5195635912. The cubic root of 89785471 is about 447.7841205197.

It can be divided in two parts, 897 and 85471, that added together give a palindrome (86368).

The spelling of 89785471 in words is "eighty-nine million, seven hundred eighty-five thousand, four hundred seventy-one".