6809390 has 32 divisors (see below), whose sum is σ = 14178240. Its totient is φ = 2306304.

The previous prime is 6809389. The next prime is 6809393. The reversal of 6809390 is 939086.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 6809390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6809393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5684 + ... + 6776.

It is an arithmetic number, because the mean of its divisors is an integer number (443070).

Almost surely, 2^6809390 is an apocalyptic number.

6809390 is an abundant number, since it is smaller than the sum of its proper divisors (7368850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6809390 is a wasteful number, since it uses less digits than its factorization.

6809390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 6809390 is about 2609.4807912686. The cubic root of 6809390 is about 189.5408117278.

The spelling of 6809390 in words is "six million, eight hundred nine thousand, three hundred ninety".