89999971 has 8 divisors (see below), whose sum is σ = 93026304. Its totient is φ = 87020040.

The previous prime is 89999969. The next prime is 89999981. The reversal of 89999971 is 17999998.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 89999971 - 2¹ = 89999969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89999911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7635 + ... + 15436.

It is an arithmetic number, because the mean of its divisors is an integer number (11628288).

Almost surely, 2^89999971 is an apocalyptic number.

89999971 is a deficient number, since it is larger than the sum of its proper divisors (3026333).

89999971 is a wasteful number, since it uses less digits than its factorization.

89999971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23201.

The product of its digits is 3306744, while the sum is 61.

The square root of 89999971 is about 9486.8314520708. The cubic root of 89999971 is about 448.1404265221.

It can be divided in two parts, 8999997 and 1, that added together give a palindrome (8999998).

The spelling of 89999971 in words is "eighty-nine million, nine hundred ninety-nine thousand, nine hundred seventy-one".