6419389 has 4 divisors (see below), whose sum is σ = 6592924. Its totient is φ = 6245856.

The previous prime is 6419339. The next prime is 6419407. The reversal of 6419389 is 9839146.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9839146 = 2 ⋅4919573.

It can be written as a sum of positive squares in 2 ways, for example, as 6125625 + 293764 = 2475^2 + 542^2 .

It is a cyclic number.

It is not a de Polignac number, because 6419389 - 2⁷ = 6419261 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 (6419339) 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, 86712 + ... + 86785.

It is an arithmetic number, because the mean of its divisors is an integer number (1648231).

Almost surely, 2^6419389 is an apocalyptic number.

It is an amenable number.

6419389 is a deficient number, since it is larger than the sum of its proper divisors (173535).

6419389 is a wasteful number, since it uses less digits than its factorization.

6419389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173534.

The product of its digits is 46656, while the sum is 40.

The square root of 6419389 is about 2533.6513177626. The cubic root of 6419389 is about 185.8508555047.

The spelling of 6419389 in words is "six million, four hundred nineteen thousand, three hundred eighty-nine".