6923947 has 4 divisors (see below), whose sum is σ = 7331256. Its totient is φ = 6516640.

The previous prime is 6923929. The next prime is 6923971. The reversal of 6923947 is 7493296.

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

It is a cyclic number.

It is not a de Polignac number, because 6923947 - 2¹⁵ = 6891179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6923047) 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, 203629 + ... + 203662.

It is an arithmetic number, because the mean of its divisors is an integer number (1832814).

Almost surely, 2^6923947 is an apocalyptic number.

6923947 is a deficient number, since it is larger than the sum of its proper divisors (407309).

6923947 is a wasteful number, since it uses less digits than its factorization.

6923947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407308.

The product of its digits is 81648, while the sum is 40.

The square root of 6923947 is about 2631.3393927808. The cubic root of 6923947 is about 190.5978123727.

The spelling of 6923947 in words is "six million, nine hundred twenty-three thousand, nine hundred forty-seven".