3189691 has 4 divisors (see below), whose sum is σ = 3193992. Its totient is φ = 3185392.

The previous prime is 3189689. The next prime is 3189713. The reversal of 3189691 is 1969813.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1969813 = 373 ⋅5281.

It is a cyclic number.

It is not a de Polignac number, because 3189691 - 2¹ = 3189689 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 3189691.

It is not an unprimeable number, because it can be changed into a prime (3189191) 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 3 ways as a sum of consecutive naturals, for example, 721 + ... + 2626.

It is an arithmetic number, because the mean of its divisors is an integer number (798498).

Almost surely, 2^3189691 is an apocalyptic number.

3189691 is a deficient number, since it is larger than the sum of its proper divisors (4301).

3189691 is an equidigital number, since it uses as much as digits as its factorization.

3189691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4300.

The product of its digits is 11664, while the sum is 37.

The square root of 3189691 is about 1785.9706044613. The cubic root of 3189691 is about 147.2028452063.

The spelling of 3189691 in words is "three million, one hundred eighty-nine thousand, six hundred ninety-one".