2729235509 has 16 divisors (see below), whose sum is σ = 3664429440. Its totient is φ = 1963085760.

The previous prime is 2729235497. The next prime is 2729235517. The reversal of 2729235509 is 9055329272.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2729235509 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 2729235509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2729235569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1362254 + ... + 1364255.

It is an arithmetic number, because the mean of its divisors is an integer number (229026840).

Almost surely, 2^2729235509 is an apocalyptic number.

It is an amenable number.

2729235509 is a deficient number, since it is larger than the sum of its proper divisors (935193931).

2729235509 is a wasteful number, since it uses less digits than its factorization.

2729235509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2726540.

The product of its (nonzero) digits is 340200, while the sum is 44.

The square root of 2729235509 is about 52242.0856111239. The cubic root of 2729235509 is about 1397.4845150896.

The spelling of 2729235509 in words is "two billion, seven hundred twenty-nine million, two hundred thirty-five thousand, five hundred nine".