79981353 has 6 divisors (see below), whose sum is σ = 115528634. Its totient is φ = 53320896.

The previous prime is 79981351. The next prime is 79981361. The reversal of 79981353 is 35318997.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 52229529 + 27751824 = 7227^2 + 5268^2 .

It is not a de Polignac number, because 79981353 - 2¹ = 79981351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79981299 and 79981308.

It is not an unprimeable number, because it can be changed into a prime (79981351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4443400 + ... + 4443417.

Almost surely, 2^79981353 is an apocalyptic number.

It is an amenable number.

79981353 is a deficient number, since it is larger than the sum of its proper divisors (35547281).

79981353 is a wasteful number, since it uses less digits than its factorization.

79981353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8886823 (or 8886820 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 79981353 is about 8943.2294502601. The cubic root of 79981353 is about 430.8534572852.

The spelling of 79981353 in words is "seventy-nine million, nine hundred eighty-one thousand, three hundred fifty-three".