2729215994 has 4 divisors (see below), whose sum is σ = 4093823994. Its totient is φ = 1364607996.

The previous prime is 2729215987. The next prime is 2729216047. The reversal of 2729215994 is 4995129272.

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

It can be written as a sum of positive squares in only one way, i.e., 1545511969 + 1183704025 = 39313^2 + 34405^2 .

It is a Curzon number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 682303997 + ... + 682304000.

Almost surely, 2^2729215994 is an apocalyptic number.

2729215994 is a deficient number, since it is larger than the sum of its proper divisors (1364608000).

2729215994 is a wasteful number, since it uses less digits than its factorization.

2729215994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364607999.

The product of its digits is 816480, while the sum is 50.

The square root of 2729215994 is about 52241.8988360875. The cubic root of 2729215994 is about 1397.4811842454.

The spelling of 2729215994 in words is "two billion, seven hundred twenty-nine million, two hundred fifteen thousand, nine hundred ninety-four".