89471139 has 4 divisors (see below), whose sum is σ = 119294856. Its totient is φ = 59647424.

The previous prime is 89471131. The next prime is 89471183. The reversal of 89471139 is 93117498.

It is a happy number.

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 89471139 - 2³ = 89471131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89471139.

It is not an unprimeable number, because it can be changed into a prime (89471131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14911854 + ... + 14911859.

It is an arithmetic number, because the mean of its divisors is an integer number (29823714).

Almost surely, 2^89471139 is an apocalyptic number.

89471139 is a deficient number, since it is larger than the sum of its proper divisors (29823717).

89471139 is a wasteful number, since it uses less digits than its factorization.

89471139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29823716.

The product of its digits is 54432, while the sum is 42.

The square root of 89471139 is about 9458.9184899755. The cubic root of 89471139 is about 447.2609569840.

The spelling of 89471139 in words is "eighty-nine million, four hundred seventy-one thousand, one hundred thirty-nine".