79221616 has 20 divisors (see below), whose sum is σ = 158444224. Its totient is φ = 38332800.

The previous prime is 79221613. The next prime is 79221617. The reversal of 79221616 is 61612297.

79221616 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79221613) 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, 79365 + ... + 80356.

Almost surely, 2^79221616 is an apocalyptic number.

It is an amenable number.

79221616 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

79221616 is a wasteful number, since it uses less digits than its factorization.

79221616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159760 (or 159754 counting only the distinct ones).

The product of its digits is 9072, while the sum is 34.

The square root of 79221616 is about 8900.6525603463. The cubic root of 79221616 is about 429.4848996992.

The spelling of 79221616 in words is "seventy-nine million, two hundred twenty-one thousand, six hundred sixteen".