3291887 has 4 divisors (see below), whose sum is σ = 3297240. Its totient is φ = 3286536.

The previous prime is 3291881. The next prime is 3291901. The reversal of 3291887 is 7881923.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3291887 - 2⁶ = 3291823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3291887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3291881) 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, 1613 + ... + 3030.

It is an arithmetic number, because the mean of its divisors is an integer number (824310).

Almost surely, 2^3291887 is an apocalyptic number.

3291887 is a deficient number, since it is larger than the sum of its proper divisors (5353).

3291887 is an equidigital number, since it uses as much as digits as its factorization.

3291887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5352.

The product of its digits is 24192, while the sum is 38.

The square root of 3291887 is about 1814.3558085447. The cubic root of 3291887 is about 148.7584483114.

It can be divided in two parts, 32 and 91887, that added together give a palindrome (91919).

The spelling of 3291887 in words is "three million, two hundred ninety-one thousand, eight hundred eighty-seven".