3487891 has 8 divisors (see below), whose sum is σ = 3841200. Its totient is φ = 3140640.

The previous prime is 3487871. The next prime is 3487921. The reversal of 3487891 is 1987843.

3487891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3487891 - 2¹¹ = 3485843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3487831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256 + ... + 2653.

It is an arithmetic number, because the mean of its divisors is an integer number (480150).

Almost surely, 2^3487891 is an apocalyptic number.

3487891 is a deficient number, since it is larger than the sum of its proper divisors (353309).

3487891 is a wasteful number, since it uses less digits than its factorization.

3487891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3029.

The product of its digits is 48384, while the sum is 40.

The square root of 3487891 is about 1867.5896230168. The cubic root of 3487891 is about 151.6541507739.

It can be divided in two parts, 34878 and 91, that added together give a square (34969 = 187²).

The spelling of 3487891 in words is "three million, four hundred eighty-seven thousand, eight hundred ninety-one".