9479129879 has 2 divisors, whose sum is σ = 9479129880. Its totient is φ = 9479129878.

The previous prime is 9479129867. The next prime is 9479129899. The reversal of 9479129879 is 9789219749.

It is a weak prime.

It is an emirp because it is prime and its reverse (9789219749) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9479129879 - 2²⁴ = 9462352663 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9479129839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4739564939 + 4739564940.

It is an arithmetic number, because the mean of its divisors is an integer number (4739564940).

Almost surely, 2^9479129879 is an apocalyptic number.

9479129879 is a deficient number, since it is larger than the sum of its proper divisors (1).

9479129879 is an equidigital number, since it uses as much as digits as its factorization.

9479129879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20575296, while the sum is 65.

The square root of 9479129879 is about 97360.8231220340. The cubic root of 9479129879 is about 2116.3597401024.

The spelling of 9479129879 in words is "nine billion, four hundred seventy-nine million, one hundred twenty-nine thousand, eight hundred seventy-nine".