3388733921 has 8 divisors (see below), whose sum is σ = 3425528424. Its totient is φ = 3352003200.

The previous prime is 3388733899. The next prime is 3388733963. The reversal of 3388733921 is 1293378833.

It can be written as a sum of positive squares in 4 ways, for example, as 1659421696 + 1729312225 = 40736^2 + 41585^2 .

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 3388733921 - 2¹⁸ = 3388471777 is a prime.

It is a super-2 number, since 2×3388733921² = 22967035174672068482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3388735921) 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, 95045 + ... + 125741.

It is an arithmetic number, because the mean of its divisors is an integer number (428191053).

Almost surely, 2^3388733921 is an apocalyptic number.

It is an amenable number.

3388733921 is a deficient number, since it is larger than the sum of its proper divisors (36794503).

3388733921 is a wasteful number, since it uses less digits than its factorization.

3388733921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31891.

The product of its digits is 653184, while the sum is 47.

The square root of 3388733921 is about 58212.8329580343. The cubic root of 3388733921 is about 1502.0319013049.

The spelling of 3388733921 in words is "three billion, three hundred eighty-eight million, seven hundred thirty-three thousand, nine hundred twenty-one".