79478219 has 2 divisors, whose sum is σ = 79478220. Its totient is φ = 79478218.

The previous prime is 79478207. The next prime is 79478249. The reversal of 79478219 is 91287497.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79478219 is a prime.

It is a super-2 number, since 2×79478219² = 12633574590823922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (79478249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39739109 + 39739110.

It is an arithmetic number, because the mean of its divisors is an integer number (39739110).

Almost surely, 2^79478219 is an apocalyptic number.

79478219 is a deficient number, since it is larger than the sum of its proper divisors (1).

79478219 is an equidigital number, since it uses as much as digits as its factorization.

79478219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 47.

The square root of 79478219 is about 8915.0557485638. The cubic root of 79478219 is about 429.9481080340.

It can be divided in two parts, 79478 and 219, that added together give a palindrome (79697).

The spelling of 79478219 in words is "seventy-nine million, four hundred seventy-eight thousand, two hundred nineteen".