3447389 has 4 divisors (see below), whose sum is σ = 3760800. Its totient is φ = 3133980.

The previous prime is 3447377. The next prime is 3447407. The reversal of 3447389 is 9837443.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3447389 - 2⁴ = 3447373 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 (3447319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156689 + ... + 156710.

It is an arithmetic number, because the mean of its divisors is an integer number (940200).

Almost surely, 2^3447389 is an apocalyptic number.

It is an amenable number.

3447389 is a deficient number, since it is larger than the sum of its proper divisors (313411).

3447389 is a wasteful number, since it uses less digits than its factorization.

3447389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313410.

The product of its digits is 72576, while the sum is 38.

The square root of 3447389 is about 1856.7145714945. The cubic root of 3447389 is about 151.0648523382.

The spelling of 3447389 in words is "three million, four hundred forty-seven thousand, three hundred eighty-nine".