3056389 has 4 divisors (see below), whose sum is σ = 3493024. Its totient is φ = 2619756.

The previous prime is 3056387. The next prime is 3056393. The reversal of 3056389 is 9836503.

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 3056389 - 2¹ = 3056387 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3056381) 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, 218307 + ... + 218320.

It is an arithmetic number, because the mean of its divisors is an integer number (873256).

Almost surely, 2^3056389 is an apocalyptic number.

It is an amenable number.

3056389 is a deficient number, since it is larger than the sum of its proper divisors (436635).

3056389 is an equidigital number, since it uses as much as digits as its factorization.

3056389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436634.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 3056389 is about 1748.2531281253. The cubic root of 3056389 is about 145.1229872119.

The spelling of 3056389 in words is "three million, fifty-six thousand, three hundred eighty-nine".