3397921 has 4 divisors (see below), whose sum is σ = 3409812. Its totient is φ = 3386032.

The previous prime is 3397907. The next prime is 3397939. The reversal of 3397921 is 1297933.

3397921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3111696 + 286225 = 1764^2 + 535^2 .

It is a cyclic number.

It is not a de Polignac number, because 3397921 - 2¹⁷ = 3266849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3397991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5506 + ... + 6091.

It is an arithmetic number, because the mean of its divisors is an integer number (852453).

Almost surely, 2^3397921 is an apocalyptic number.

It is an amenable number.

3397921 is a deficient number, since it is larger than the sum of its proper divisors (11891).

3397921 is a wasteful number, since it uses less digits than its factorization.

3397921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11890.

The product of its digits is 10206, while the sum is 34.

The square root of 3397921 is about 1843.3450572261. The cubic root of 3397921 is about 150.3388045374.

The spelling of 3397921 in words is "three million, three hundred ninety-seven thousand, nine hundred twenty-one".