6891942 has 16 divisors (see below), whose sum is σ = 13876992. Its totient is φ = 2281800.

The previous prime is 6891931. The next prime is 6891943. The reversal of 6891942 is 2491986.

It is a self number, because there is not a number n which added to its sum of digits gives 6891942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6891943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2898 + ... + 4709.

It is an arithmetic number, because the mean of its divisors is an integer number (867312).

Almost surely, 2^6891942 is an apocalyptic number.

6891942 is an abundant number, since it is smaller than the sum of its proper divisors (6985050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6891942 is a wasteful number, since it uses less digits than its factorization.

6891942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7763.

The product of its digits is 31104, while the sum is 39.

The square root of 6891942 is about 2625.2508451575. The cubic root of 6891942 is about 190.3036879314.

The spelling of 6891942 in words is "six million, eight hundred ninety-one thousand, nine hundred forty-two".