6989331 has 4 divisors (see below), whose sum is σ = 9319112. Its totient is φ = 4659552.

The previous prime is 6989327. The next prime is 6989341. The reversal of 6989331 is 1339896.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6989331 - 2² = 6989327 is a prime.

It is a super-2 number, since 2×6989331² = 97701495655122, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

6989331 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6989331.

It is not an unprimeable number, because it can be changed into a prime (6989341) 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 3 ways as a sum of consecutive naturals, for example, 1164886 + ... + 1164891.

It is an arithmetic number, because the mean of its divisors is an integer number (2329778).

Almost surely, 2^6989331 is an apocalyptic number.

6989331 is a deficient number, since it is larger than the sum of its proper divisors (2329781).

6989331 is a wasteful number, since it uses less digits than its factorization.

6989331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2329780.

The product of its digits is 34992, while the sum is 39.

The square root of 6989331 is about 2643.7342907335. The cubic root of 6989331 is about 191.1958828470.

The spelling of 6989331 in words is "six million, nine hundred eighty-nine thousand, three hundred thirty-one".