79221474 has 12 divisors (see below), whose sum is σ = 171646566. Its totient is φ = 26407152.

The previous prime is 79221473. The next prime is 79221491. The reversal of 79221474 is 47412297.

It can be written as a sum of positive squares in only one way, i.e., 71520849 + 7700625 = 8457^2 + 2775^2 .

It is not an unprimeable number, because it can be changed into a prime (79221473) 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 5 ways as a sum of consecutive naturals, for example, 2200579 + ... + 2200614.

Almost surely, 2^79221474 is an apocalyptic number.

79221474 is an abundant number, since it is smaller than the sum of its proper divisors (92425092).

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

79221474 is a wasteful number, since it uses less digits than its factorization.

79221474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4401201 (or 4401198 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 79221474 is about 8900.6445833996. The cubic root of 79221474 is about 429.4846430904.

The spelling of 79221474 in words is "seventy-nine million, two hundred twenty-one thousand, four hundred seventy-four".