6923391 has 16 divisors (see below), whose sum is σ = 10141440. Its totient is φ = 4181760.

The previous prime is 6923381. The next prime is 6923417. The reversal of 6923391 is 1933296.

It is not a de Polignac number, because 6923391 - 2⁶ = 6923327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6923321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1330 + ... + 3951.

It is an arithmetic number, because the mean of its divisors is an integer number (633840).

Almost surely, 2^6923391 is an apocalyptic number.

6923391 is a deficient number, since it is larger than the sum of its proper divisors (3218049).

6923391 is a wasteful number, since it uses less digits than its factorization.

6923391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5326.

The product of its digits is 8748, while the sum is 33.

The square root of 6923391 is about 2631.2337410424. The cubic root of 6923391 is about 190.5927105033.

The spelling of 6923391 in words is "six million, nine hundred twenty-three thousand, three hundred ninety-one".