2729946409 has 4 divisors (see below), whose sum is σ = 2732190804. Its totient is φ = 2727702016.

The previous prime is 2729946367. The next prime is 2729946463. The reversal of 2729946409 is 9046499272.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 595506409 + 2134440000 = 24403^2 + 46200^2 .

It is a cyclic number.

It is not a de Polignac number, because 2729946409 - 2⁷ = 2729946281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2729944409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1120372 + ... + 1122805.

It is an arithmetic number, because the mean of its divisors is an integer number (683047701).

Almost surely, 2^2729946409 is an apocalyptic number.

It is an amenable number.

2729946409 is a deficient number, since it is larger than the sum of its proper divisors (2244395).

2729946409 is a wasteful number, since it uses less digits than its factorization.

2729946409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244394.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The square root of 2729946409 is about 52248.8890695295. The cubic root of 2729946409 is about 1397.6058415554.

The spelling of 2729946409 in words is "two billion, seven hundred twenty-nine million, nine hundred forty-six thousand, four hundred nine".