79889216 has 56 divisors (see below), whose sum is σ = 177674016. Its totient is φ = 35320320.

The previous prime is 79889209. The next prime is 79889219. The reversal of 79889216 is 61298897.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79889219) 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, 24515 + ... + 27581.

Almost surely, 2^79889216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79889216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88837008).

79889216 is an abundant number, since it is smaller than the sum of its proper divisors (97784800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79889216 is a wasteful number, since it uses less digits than its factorization.

79889216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3127 (or 3117 counting only the distinct ones).

The product of its digits is 435456, while the sum is 50.

The square root of 79889216 is about 8938.0767506215. The cubic root of 79889216 is about 430.6879487140.

The spelling of 79889216 in words is "seventy-nine million, eight hundred eighty-nine thousand, two hundred sixteen".