6849999 has 24 divisors (see below), whose sum is σ = 10762752. Its totient is φ = 4173120.

The previous prime is 6849991. The next prime is 6850007. The reversal of 6849999 is 9999486.

It is a happy number.

6849999 is a `hidden beast` number, since 68 + 499 + 99 = 666.

6849999 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6849991) and next prime (6850007).

It is not a de Polignac number, because 6849999 - 2³ = 6849991 is a prime.

6849999 is a modest number, since divided by 9999 gives 684 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6849991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14629 + ... + 15089.

It is an arithmetic number, because the mean of its divisors is an integer number (448448).

Almost surely, 2^6849999 is an apocalyptic number.

6849999 is a deficient number, since it is larger than the sum of its proper divisors (3912753).

6849999 is a wasteful number, since it uses less digits than its factorization.

6849999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607 (or 604 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 6849999 is about 2617.2502746203. The cubic root of 6849999 is about 189.9168518912.

The spelling of 6849999 in words is "six million, eight hundred forty-nine thousand, nine hundred ninety-nine".