6850389 has 32 divisors (see below), whose sum is σ = 11741184. Its totient is φ = 3453120.

The previous prime is 6850379. The next prime is 6850421. The reversal of 6850389 is 9830586.

It is not a de Polignac number, because 6850389 - 2⁹ = 6849877 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6850309) 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 31 ways as a sum of consecutive naturals, for example, 5734 + ... + 6824.

It is an arithmetic number, because the mean of its divisors is an integer number (366912).

Almost surely, 2^6850389 is an apocalyptic number.

6850389 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

6850389 is a deficient number, since it is larger than the sum of its proper divisors (4890795).

6850389 is a wasteful number, since it uses less digits than its factorization.

6850389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 6850389 is about 2617.3247792355. The cubic root of 6850389 is about 189.9204560848.

The spelling of 6850389 in words is "six million, eight hundred fifty thousand, three hundred eighty-nine".