3291289 has 4 divisors (see below), whose sum is σ = 3297024. Its totient is φ = 3285556.

The previous prime is 3291283. The next prime is 3291293. The reversal of 3291289 is 9821923.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9821923 = 29 ⋅338687.

It is a cyclic number.

It is not a de Polignac number, because 3291289 - 2¹¹ = 3289241 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3291283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1897 + ... + 3190.

It is an arithmetic number, because the mean of its divisors is an integer number (824256).

Almost surely, 2^3291289 is an apocalyptic number.

It is an amenable number.

3291289 is a deficient number, since it is larger than the sum of its proper divisors (5735).

3291289 is an equidigital number, since it uses as much as digits as its factorization.

3291289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5734.

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

The square root of 3291289 is about 1814.1910042771. The cubic root of 3291289 is about 148.7494400092.

The spelling of 3291289 in words is "three million, two hundred ninety-one thousand, two hundred eighty-nine".