3289891 has 16 divisors (see below), whose sum is σ = 3868128. Its totient is φ = 2764800.

The previous prime is 3289889. The next prime is 3289931. The reversal of 3289891 is 1989823.

3289891 is nontrivially palindromic in base 4 and base 16.

It is a 12-Lehmer number, since φ(3289891) divides (3289891-1)¹².

It is a cyclic number.

It is not a de Polignac number, because 3289891 - 2¹ = 3289889 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3289861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13531 + ... + 13771.

It is an arithmetic number, because the mean of its divisors is an integer number (241758).

Almost surely, 2^3289891 is an apocalyptic number.

3289891 is a deficient number, since it is larger than the sum of its proper divisors (578237).

3289891 is a wasteful number, since it uses less digits than its factorization.

3289891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342.

The product of its digits is 31104, while the sum is 40.

The square root of 3289891 is about 1813.8056676502. The cubic root of 3289891 is about 148.7283762084.

The spelling of 3289891 in words is "three million, two hundred eighty-nine thousand, eight hundred ninety-one".