6908389 has 4 divisors (see below), whose sum is σ = 7055424. Its totient is φ = 6761356.

The previous prime is 6908387. The next prime is 6908393. The reversal of 6908389 is 9838096.

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 6908389 - 2¹ = 6908387 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6908383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73447 + ... + 73540.

It is an arithmetic number, because the mean of its divisors is an integer number (1763856).

Almost surely, 2^6908389 is an apocalyptic number.

It is an amenable number.

6908389 is a deficient number, since it is larger than the sum of its proper divisors (147035).

6908389 is a wasteful number, since it uses less digits than its factorization.

6908389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147034.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 6908389 is about 2628.3814411154. The cubic root of 6908389 is about 190.4549485528.

The spelling of 6908389 in words is "six million, nine hundred eight thousand, three hundred eighty-nine".