2729448779 has 4 divisors (see below), whose sum is σ = 2792924376. Its totient is φ = 2665973184.

The previous prime is 2729448773. The next prime is 2729448791. The reversal of 2729448779 is 9778449272.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2729448779 - 2⁴ = 2729448763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2729448773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31737734 + ... + 31737819.

It is an arithmetic number, because the mean of its divisors is an integer number (698231094).

Almost surely, 2^2729448779 is an apocalyptic number.

2729448779 is a deficient number, since it is larger than the sum of its proper divisors (63475597).

2729448779 is an equidigital number, since it uses as much as digits as its factorization.

2729448779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63475596.

The product of its digits is 14224896, while the sum is 59.

The square root of 2729448779 is about 52244.1267416731. The cubic root of 2729448779 is about 1397.5209152413.

The spelling of 2729448779 in words is "two billion, seven hundred twenty-nine million, four hundred forty-eight thousand, seven hundred seventy-nine".