3491191 has 8 divisors (see below), whose sum is σ = 3901968. Its totient is φ = 3096000.

The previous prime is 3491183. The next prime is 3491197. The reversal of 3491191 is 1911943.

It is a happy number.

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 3491191 - 2³ = 3491183 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 (3491197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3420 + ... + 4321.

It is an arithmetic number, because the mean of its divisors is an integer number (487746).

Almost surely, 2^3491191 is an apocalyptic number.

3491191 is a deficient number, since it is larger than the sum of its proper divisors (410777).

3491191 is a wasteful number, since it uses less digits than its factorization.

3491191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7793.

The product of its digits is 972, while the sum is 28.

The square root of 3491191 is about 1868.4729058780. The cubic root of 3491191 is about 151.7019639029.

It can be divided in two parts, 349 and 1191, that added together give a triangular number (1540 = T₅₅).

The spelling of 3491191 in words is "three million, four hundred ninety-one thousand, one hundred ninety-one".