6904389 has 16 divisors (see below), whose sum is σ = 9419328. Its totient is φ = 4497792.

The previous prime is 6904379. The next prime is 6904421. The reversal of 6904389 is 9834096.

It is not a de Polignac number, because 6904389 - 2⁸ = 6904133 is a prime.

It is a d-powerful number, because it can be written as 6⁵ + 9² + 0 + 4⁷ + 3³ + 8⁷ + 9⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6904309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43899 + ... + 44055.

It is an arithmetic number, because the mean of its divisors is an integer number (588708).

Almost surely, 2^6904389 is an apocalyptic number.

It is an amenable number.

6904389 is a deficient number, since it is larger than the sum of its proper divisors (2514939).

6904389 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 11 representation: 6904389 = (3996408)₁₁.

6904389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 6904389 is about 2627.6204063753. The cubic root of 6904389 is about 190.4181832580.

The spelling of 6904389 in words is "six million, nine hundred four thousand, three hundred eighty-nine".