6898939 has 4 divisors (see below), whose sum is σ = 6904224. Its totient is φ = 6893656.

The previous prime is 6898921. The next prime is 6898949. The reversal of 6898939 is 9398986.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9398986 = 2 ⋅4699493.

It is a cyclic number.

It is not a de Polignac number, because 6898939 - 2⁵ = 6898907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6898949) 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, 894 + ... + 3820.

It is an arithmetic number, because the mean of its divisors is an integer number (1726056).

Almost surely, 2^6898939 is an apocalyptic number.

6898939 is a deficient number, since it is larger than the sum of its proper divisors (5285).

6898939 is a wasteful number, since it uses less digits than its factorization.

6898939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5284.

The product of its digits is 839808, while the sum is 52.

The square root of 6898939 is about 2626.5831416500. The cubic root of 6898939 is about 190.3680676829.

The spelling of 6898939 in words is "six million, eight hundred ninety-eight thousand, nine hundred thirty-nine".