3491887 has 6 divisors (see below), whose sum is σ = 4062048. Its totient is φ = 2993004.

The previous prime is 3491881. The next prime is 3491897. The reversal of 3491887 is 7881943.

3491887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3491887 - 2¹⁵ = 3459119 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 (3491881) 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 5 ways as a sum of consecutive naturals, for example, 35583 + ... + 35680.

It is an arithmetic number, because the mean of its divisors is an integer number (677008).

Almost surely, 2^3491887 is an apocalyptic number.

3491887 is a deficient number, since it is larger than the sum of its proper divisors (570161).

3491887 is an equidigital number, since it uses as much as digits as its factorization.

3491887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71277 (or 71270 counting only the distinct ones).

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

The square root of 3491887 is about 1868.6591449486. The cubic root of 3491887 is about 151.7120442787.

The spelling of 3491887 in words is "three million, four hundred ninety-one thousand, eight hundred eighty-seven".