7939894 has 8 divisors (see below), whose sum is σ = 11924640. Its totient is φ = 3965016.

The previous prime is 7939861. The next prime is 7939909. The reversal of 7939894 is 4989397.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 67 + ... + 3985.

It is an arithmetic number, because the mean of its divisors is an integer number (1490580).

Almost surely, 2^7939894 is an apocalyptic number.

7939894 is a deficient number, since it is larger than the sum of its proper divisors (3984746).

7939894 is a wasteful number, since it uses less digits than its factorization.

7939894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4934.

The product of its digits is 489888, while the sum is 49.

The square root of 7939894 is about 2817.7817516621. The cubic root of 7939894 is about 199.4978569837.

The spelling of 7939894 in words is "seven million, nine hundred thirty-nine thousand, eight hundred ninety-four".