891994 has 8 divisors (see below), whose sum is σ = 1381248. Its totient is φ = 431580.

The previous prime is 891991. The next prime is 891997. The reversal of 891994 is 499198.

It is an interprime number because it is at equal distance from previous prime (891991) and next prime (891997).

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

It is not an unprimeable number, because it can be changed into a prime (891991) 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 3 ways as a sum of consecutive naturals, for example, 7132 + ... + 7255.

It is an arithmetic number, because the mean of its divisors is an integer number (172656).

2⁸⁹¹⁹⁹⁴ is an apocalyptic number.

891994 is a deficient number, since it is larger than the sum of its proper divisors (489254).

891994 is a wasteful number, since it uses less digits than its factorization.

891994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14420.

The product of its digits is 23328, while the sum is 40.

The square root of 891994 is about 944.4543398174. The cubic root of 891994 is about 96.2617998689.

The spelling of 891994 in words is "eight hundred ninety-one thousand, nine hundred ninety-four".