6923989 has 8 divisors (see below), whose sum is σ = 7394112. Its totient is φ = 6468000.

The previous prime is 6923971. The next prime is 6924013. The reversal of 6923989 is 9893296.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6923989 - 2¹⁵ = 6891221 is a prime.

It is a Duffinian number.

6923989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6923909) 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 7 ways as a sum of consecutive naturals, for example, 2512 + ... + 4489.

It is an arithmetic number, because the mean of its divisors is an integer number (924264).

Almost surely, 2^6923989 is an apocalyptic number.

It is an amenable number.

6923989 is a deficient number, since it is larger than the sum of its proper divisors (470123).

6923989 is a wasteful number, since it uses less digits than its factorization.

6923989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7067.

The product of its digits is 209952, while the sum is 46.

The square root of 6923989 is about 2631.3473734952. The cubic root of 6923989 is about 190.5981977546.

The spelling of 6923989 in words is "six million, nine hundred twenty-three thousand, nine hundred eighty-nine".