6889409 has 12 divisors (see below), whose sum is σ = 7292592. Its totient is φ = 6506280.

The previous prime is 6889391. The next prime is 6889411. The reversal of 6889409 is 9049886.

6889409 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6889409 - 2¹² = 6885313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6889409.

It is not an unprimeable number, because it can be changed into a prime (6889499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64334 + ... + 64440.

It is an arithmetic number, because the mean of its divisors is an integer number (607716).

Almost surely, 2^6889409 is an apocalyptic number.

It is an amenable number.

6889409 is a deficient number, since it is larger than the sum of its proper divisors (403183).

6889409 is a wasteful number, since it uses less digits than its factorization.

6889409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 6889409 is about 2624.7683707329. The cubic root of 6889409 is about 190.2803709278.

The spelling of 6889409 in words is "six million, eight hundred eighty-nine thousand, four hundred nine".