3443691 has 4 divisors (see below), whose sum is σ = 4591592. Its totient is φ = 2295792.

The previous prime is 3443683. The next prime is 3443719. The reversal of 3443691 is 1963443.

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

It is not a de Polignac number, because 3443691 - 2³ = 3443683 is a prime.

It is a D-number.

It is a Duffinian number.

3443691 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3443621) 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, 573946 + ... + 573951.

It is an arithmetic number, because the mean of its divisors is an integer number (1147898).

Almost surely, 2^3443691 is an apocalyptic number.

3443691 is a deficient number, since it is larger than the sum of its proper divisors (1147901).

3443691 is a wasteful number, since it uses less digits than its factorization.

3443691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147900.

The product of its digits is 7776, while the sum is 30.

The square root of 3443691 is about 1855.7184592497. The cubic root of 3443691 is about 151.0108174640.

The spelling of 3443691 in words is "three million, four hundred forty-three thousand, six hundred ninety-one".