3388921 has 2 divisors, whose sum is σ = 3388922. Its totient is φ = 3388920.

The previous prime is 3388907. The next prime is 3388939. The reversal of 3388921 is 1298833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2134521 + 1254400 = 1461^2 + 1120^2 .

It is a cyclic number.

It is not a de Polignac number, because 3388921 - 2¹⁹ = 2864633 is a prime.

It is a super-2 number, since 2×3388921² = 22969571088482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3388961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1694460 + 1694461.

It is an arithmetic number, because the mean of its divisors is an integer number (1694461).

Almost surely, 2^3388921 is an apocalyptic number.

It is an amenable number.

3388921 is a deficient number, since it is larger than the sum of its proper divisors (1).

3388921 is an equidigital number, since it uses as much as digits as its factorization.

3388921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 34.

The square root of 3388921 is about 1840.9022244541. The cubic root of 3388921 is about 150.2059541269.

The spelling of 3388921 in words is "three million, three hundred eighty-eight thousand, nine hundred twenty-one".