2729312639 has 2 divisors, whose sum is σ = 2729312640. Its totient is φ = 2729312638.

The previous prime is 2729312609. The next prime is 2729312647. The reversal of 2729312639 is 9362139272.

2729312639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2729312639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2729312639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2729312609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1364656319 + 1364656320.

It is an arithmetic number, because the mean of its divisors is an integer number (1364656320).

Almost surely, 2^2729312639 is an apocalyptic number.

2729312639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2729312639 is an equidigital number, since it uses as much as digits as its factorization.

2729312639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 44.

The square root of 2729312639 is about 52242.8238038489. The cubic root of 2729312639 is about 1397.4976795777.

The spelling of 2729312639 in words is "two billion, seven hundred twenty-nine million, three hundred twelve thousand, six hundred thirty-nine".