79221583 has 12 divisors (see below), whose sum is σ = 97007160. Its totient is φ = 64329552.

The previous prime is 79221559. The next prime is 79221599. The reversal of 79221583 is 38512297.

It is a de Polignac number, because none of the positive numbers 2^k-79221583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79221503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41616 + ... + 43477.

It is an arithmetic number, because the mean of its divisors is an integer number (8083930).

Almost surely, 2^79221583 is an apocalyptic number.

79221583 is a deficient number, since it is larger than the sum of its proper divisors (17785577).

79221583 is a wasteful number, since it uses less digits than its factorization.

79221583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85126 (or 85119 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 79221583 is about 8900.6507065495. The cubic root of 79221583 is about 429.4848400648.

The spelling of 79221583 in words is "seventy-nine million, two hundred twenty-one thousand, five hundred eighty-three".