79478797 has 2 divisors, whose sum is σ = 79478798. Its totient is φ = 79478796.

The previous prime is 79478783. The next prime is 79478827. The reversal of 79478797 is 79787497.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74545956 + 4932841 = 8634^2 + 2221^2 .

It is a cyclic number.

It is not a de Polignac number, because 79478797 - 2¹⁹ = 78954509 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79478297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39739398 + 39739399.

It is an arithmetic number, because the mean of its divisors is an integer number (39739399).

Almost surely, 2^79478797 is an apocalyptic number.

It is an amenable number.

79478797 is a deficient number, since it is larger than the sum of its proper divisors (1).

79478797 is an equidigital number, since it uses as much as digits as its factorization.

79478797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6223392, while the sum is 58.

The square root of 79478797 is about 8915.0881655764. The cubic root of 79478797 is about 429.9491502877.

The spelling of 79478797 in words is "seventy-nine million, four hundred seventy-eight thousand, seven hundred ninety-seven".