3899985229329 has 16 divisors (see below), whose sum is σ = 6255615406080. Its totient is φ = 2111270199120.

The previous prime is 3899985229271. The next prime is 3899985229369. The reversal of 3899985229329 is 9239225899983.

It is not a de Polignac number, because 3899985229329 - 2⁹ = 3899985228817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3899985229369) 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, 4887199137 + ... + 4887199934.

It is an arithmetic number, because the mean of its divisors is an integer number (390975962880).

Almost surely, 2^{3899985229329} is an apocalyptic number.

It is an amenable number.

3899985229329 is a deficient number, since it is larger than the sum of its proper divisors (2355630176751).

3899985229329 is a wasteful number, since it uses less digits than its factorization.

3899985229329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9774399100.

The product of its digits is 1360488960, while the sum is 78.

The spelling of 3899985229329 in words is "three trillion, eight hundred ninety-nine billion, nine hundred eighty-five million, two hundred twenty-nine thousand, three hundred twenty-nine".