6939321 has 4 divisors (see below), whose sum is σ = 9252432. Its totient is φ = 4626212.

The previous prime is 6939301. The next prime is 6939337. The reversal of 6939321 is 1239396.

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 6939321 - 2⁷ = 6939193 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (6939301) 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, 1156551 + ... + 1156556.

It is an arithmetic number, because the mean of its divisors is an integer number (2313108).

Almost surely, 2^6939321 is an apocalyptic number.

It is an amenable number.

6939321 is a deficient number, since it is larger than the sum of its proper divisors (2313111).

6939321 is a wasteful number, since it uses less digits than its factorization.

6939321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313110.

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

The square root of 6939321 is about 2634.2590988739. The cubic root of 6939321 is about 190.7387765103.

It can be divided in two parts, 6939 and 321, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 6939321 in words is "six million, nine hundred thirty-nine thousand, three hundred twenty-one".