3531809 has 2 divisors, whose sum is σ = 3531810. Its totient is φ = 3531808.

The previous prime is 3531797. The next prime is 3531833. The reversal of 3531809 is 9081353.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1849600 + 1682209 = 1360^2 + 1297^2 .

It is an emirp because it is prime and its reverse (9081353) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3531809 - 2²⁰ = 2483233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3531109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1765904 + 1765905.

It is an arithmetic number, because the mean of its divisors is an integer number (1765905).

Almost surely, 2^3531809 is an apocalyptic number.

It is an amenable number.

3531809 is a deficient number, since it is larger than the sum of its proper divisors (1).

3531809 is an equidigital number, since it uses as much as digits as its factorization.

3531809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 3531809 is about 1879.3107779183. The cubic root of 3531809 is about 152.2880186511.

The spelling of 3531809 in words is "three million, five hundred thirty-one thousand, eight hundred nine".