6989937 has 4 divisors (see below), whose sum is σ = 9319920. Its totient is φ = 4659956.

The previous prime is 6989933. The next prime is 6989947. The reversal of 6989937 is 7399896.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6989937 - 2² = 6989933 is a prime.

It is a D-number.

6989937 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6989937.

It is not an unprimeable number, because it can be changed into a prime (6989933) 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, 1164987 + ... + 1164992.

It is an arithmetic number, because the mean of its divisors is an integer number (2329980).

Almost surely, 2^6989937 is an apocalyptic number.

It is an amenable number.

6989937 is a deficient number, since it is larger than the sum of its proper divisors (2329983).

6989937 is a wasteful number, since it uses less digits than its factorization.

6989937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2329982.

The product of its digits is 734832, while the sum is 51.

The square root of 6989937 is about 2643.8488988594. The cubic root of 6989937 is about 191.2014084763.

The spelling of 6989937 in words is "six million, nine hundred eighty-nine thousand, nine hundred thirty-seven".