3389305821 has 16 divisors (see below), whose sum is σ = 4933465920. Its totient is φ = 2052638720.

The previous prime is 3389305817. The next prime is 3389305837. The reversal of 3389305821 is 1285039833.

3389305821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3389305821 - 2² = 3389305817 is a prime.

It is a super-2 number, since 2×3389305821² = 22974787896528968082, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3389305891) 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, 10051 + ... + 82943.

It is an arithmetic number, because the mean of its divisors is an integer number (308341620).

Almost surely, 2^3389305821 is an apocalyptic number.

It is an amenable number.

3389305821 is a deficient number, since it is larger than the sum of its proper divisors (1544160099).

3389305821 is a wasteful number, since it uses less digits than its factorization.

3389305821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74316.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 3389305821 is about 58217.7448979261. The cubic root of 3389305821 is about 1502.1163934038.

The spelling of 3389305821 in words is "three billion, three hundred eighty-nine million, three hundred five thousand, eight hundred twenty-one".