3843399689 has 4 divisors (see below), whose sum is σ = 3843558660. Its totient is φ = 3843240720.

The previous prime is 3843399683. The next prime is 3843399697. The reversal of 3843399689 is 9869933483.

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 2087119225 + 1756280464 = 45685^2 + 41908^2 .

It is a cyclic number.

It is not a de Polignac number, because 3843399689 - 2⁴ = 3843399673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3843399683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34874 + ... + 94355.

It is an arithmetic number, because the mean of its divisors is an integer number (960889665).

Almost surely, 2^3843399689 is an apocalyptic number.

It is an amenable number.

3843399689 is a deficient number, since it is larger than the sum of its proper divisors (158971).

3843399689 is a wasteful number, since it uses less digits than its factorization.

3843399689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158970.

The product of its digits is 30233088, while the sum is 62.

The square root of 3843399689 is about 61995.1585932321. The cubic root of 3843399689 is about 1566.4090497538.

The spelling of 3843399689 in words is "three billion, eight hundred forty-three million, three hundred ninety-nine thousand, six hundred eighty-nine".