3509321 has 2 divisors, whose sum is σ = 3509322. Its totient is φ = 3509320.

The previous prime is 3509299. The next prime is 3509347. The reversal of 3509321 is 1239053.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3222025 + 287296 = 1795^2 + 536^2 .

It is a cyclic number.

It is not a de Polignac number, because 3509321 - 2⁶ = 3509257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3509371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1754660 + 1754661.

It is an arithmetic number, because the mean of its divisors is an integer number (1754661).

Almost surely, 2^3509321 is an apocalyptic number.

It is an amenable number.

3509321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3509321 is an equidigital number, since it uses as much as digits as its factorization.

3509321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 3509321 is about 1873.3181790609. The cubic root of 3509321 is about 151.9641102938.

The spelling of 3509321 in words is "three million, five hundred nine thousand, three hundred twenty-one".