79481147 has 2 divisors, whose sum is σ = 79481148. Its totient is φ = 79481146.

The previous prime is 79481119. The next prime is 79481167. The reversal of 79481147 is 74118497.

It is a strong prime.

It is an emirp because it is prime and its reverse (74118497) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79481147 - 2¹⁰ = 79480123 is a prime.

It is not a weakly prime, because it can be changed into another prime (79481107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39740573 + 39740574.

It is an arithmetic number, because the mean of its divisors is an integer number (39740574).

Almost surely, 2^79481147 is an apocalyptic number.

79481147 is a deficient number, since it is larger than the sum of its proper divisors (1).

79481147 is an equidigital number, since it uses as much as digits as its factorization.

79481147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 41.

The square root of 79481147 is about 8915.2199636352. The cubic root of 79481147 is about 429.9533877723.

The spelling of 79481147 in words is "seventy-nine million, four hundred eighty-one thousand, one hundred forty-seven".