6941921 has 4 divisors (see below), whose sum is σ = 7933632. Its totient is φ = 5950212.

The previous prime is 6941917. The next prime is 6941939. The reversal of 6941921 is 1291496.

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 6941921 - 2² = 6941917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6941941) 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, 495845 + ... + 495858.

It is an arithmetic number, because the mean of its divisors is an integer number (1983408).

Almost surely, 2^6941921 is an apocalyptic number.

It is an amenable number.

6941921 is a deficient number, since it is larger than the sum of its proper divisors (991711).

6941921 is an equidigital number, since it uses as much as digits as its factorization.

6941921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991710.

The product of its digits is 3888, while the sum is 32.

The square root of 6941921 is about 2634.7525500510. The cubic root of 6941921 is about 190.7625953102.

The spelling of 6941921 in words is "six million, nine hundred forty-one thousand, nine hundred twenty-one".