79828417 has 2 divisors, whose sum is σ = 79828418. Its totient is φ = 79828416.

The previous prime is 79828373. The next prime is 79828453. The reversal of 79828417 is 71482897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54184321 + 25644096 = 7361^2 + 5064^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79828417 is a prime.

It is not a weakly prime, because it can be changed into another prime (79828457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39914208 + 39914209.

It is an arithmetic number, because the mean of its divisors is an integer number (39914209).

Almost surely, 2^79828417 is an apocalyptic number.

It is an amenable number.

79828417 is a deficient number, since it is larger than the sum of its proper divisors (1).

79828417 is an equidigital number, since it uses as much as digits as its factorization.

79828417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 46.

The square root of 79828417 is about 8934.6749800986. The cubic root of 79828417 is about 430.5786638675.

The spelling of 79828417 in words is "seventy-nine million, eight hundred twenty-eight thousand, four hundred seventeen".