7894 has 4 divisors (see below), whose sum is σ = 11844. Its totient is φ = 3946.

The previous prime is 7883. The next prime is 7901. The reversal of 7894 is 4987.

It is a semiprime because it is the product of two primes.

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1972 + ... + 1975.

It is an arithmetic number, because the mean of its divisors is an integer number (2961).

2⁷⁸⁹⁴ is an apocalyptic number.

7894 is a deficient number, since it is larger than the sum of its proper divisors (3950).

7894 is a wasteful number, since it uses less digits than its factorization.

7894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3949.

The product of its digits is 2016, while the sum is 28.

The square root of 7894 is about 88.8481851250. The cubic root of 7894 is about 19.9112736303.

The spelling of 7894 in words is "seven thousand, eight hundred ninety-four".