2399013729 has 12 divisors (see below), whose sum is σ = 3960276736. Its totient is φ = 1370864952.

The previous prime is 2399013703. The next prime is 2399013737. The reversal of 2399013729 is 9273109932.

It is a happy number.

It is not a de Polignac number, because 2399013729 - 2¹⁶ = 2398948193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2399013829) 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 11 ways as a sum of consecutive naturals, for example, 19039729 + ... + 19039854.

Almost surely, 2^2399013729 is an apocalyptic number.

It is an amenable number.

2399013729 is a deficient number, since it is larger than the sum of its proper divisors (1561263007).

2399013729 is a wasteful number, since it uses less digits than its factorization.

2399013729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38079596 (or 38079593 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The square root of 2399013729 is about 48979.7277350538. The cubic root of 2399013729 is about 1338.6824743957.

The spelling of 2399013729 in words is "two billion, three hundred ninety-nine million, thirteen thousand, seven hundred twenty-nine".