89871616929 has 32 divisors (see below), whose sum is σ = 123961851904. Its totient is φ = 57881355840.

The previous prime is 89871616909. The next prime is 89871616943. The reversal of 89871616929 is 92961617898.

It is a de Polignac number, because none of the positive numbers 2^k-89871616929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89871616929.

It is not an unprimeable number, because it can be changed into a prime (89871616909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5414487 + ... + 5431059.

It is an arithmetic number, because the mean of its divisors is an integer number (3873807872).

Almost surely, 2^89871616929 is an apocalyptic number.

It is an amenable number.

89871616929 is a deficient number, since it is larger than the sum of its proper divisors (34090234975).

89871616929 is a wasteful number, since it uses less digits than its factorization.

89871616929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17077.

The product of its digits is 23514624, while the sum is 66.

The spelling of 89871616929 in words is "eighty-nine billion, eight hundred seventy-one million, six hundred sixteen thousand, nine hundred twenty-nine".