3440389 has 8 divisors (see below), whose sum is σ = 3538080. Its totient is φ = 3344016.

The previous prime is 3440377. The next prime is 3440399. The reversal of 3440389 is 9830443.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3440389 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 3440389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3440309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7134 + ... + 7600.

It is an arithmetic number, because the mean of its divisors is an integer number (442260).

Almost surely, 2^3440389 is an apocalyptic number.

It is an amenable number.

3440389 is a deficient number, since it is larger than the sum of its proper divisors (97691).

3440389 is a wasteful number, since it uses less digits than its factorization.

3440389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 3440389 is about 1854.8285635066. The cubic root of 3440389 is about 150.9625362082.

The spelling of 3440389 in words is "three million, four hundred forty thousand, three hundred eighty-nine".