3298921 has 2 divisors, whose sum is σ = 3298922. Its totient is φ = 3298920.

The previous prime is 3298909. The next prime is 3298979. The reversal of 3298921 is 1298923.

3298921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2143296 + 1155625 = 1464^2 + 1075^2 .

It is an emirp because it is prime and its reverse (1298923) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3298921 - 2¹⁷ = 3167849 is a prime.

It is an alternating number because its digits alternate between odd and even.

3298921 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3298621) 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 as a sum of consecutive naturals, namely, 1649460 + 1649461.

It is an arithmetic number, because the mean of its divisors is an integer number (1649461).

Almost surely, 2^3298921 is an apocalyptic number.

It is an amenable number.

3298921 is a deficient number, since it is larger than the sum of its proper divisors (1).

3298921 is an equidigital number, since it uses as much as digits as its factorization.

3298921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 34.

The square root of 3298921 is about 1816.2932032026. The cubic root of 3298921 is about 148.8643270499.

The spelling of 3298921 in words is "three million, two hundred ninety-eight thousand, nine hundred twenty-one".