2939985813 has 8 divisors (see below), whose sum is σ = 3922408800. Its totient is φ = 1958776688.

The previous prime is 2939985793. The next prime is 2939985817. The reversal of 2939985813 is 3185899392.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2939985813 - 2¹⁴ = 2939969429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2939985817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297798 + ... + 307511.

It is an arithmetic number, because the mean of its divisors is an integer number (490301100).

Almost surely, 2^2939985813 is an apocalyptic number.

It is an amenable number.

2939985813 is a deficient number, since it is larger than the sum of its proper divisors (982422987).

2939985813 is a wasteful number, since it uses less digits than its factorization.

2939985813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606931.

The product of its digits is 4199040, while the sum is 57.

The square root of 2939985813 is about 54221.6360229014. The cubic root of 2939985813 is about 1432.5674470343.

The spelling of 2939985813 in words is "two billion, nine hundred thirty-nine million, nine hundred eighty-five thousand, eight hundred thirteen".