891963 has 24 divisors (see below), whose sum is σ = 1397760. Its totient is φ = 546480.

The previous prime is 891929. The next prime is 891967. The reversal of 891963 is 369198.

It is not a de Polignac number, because 891963 - 2⁶ = 891899 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 891963.

It is not an unprimeable number, because it can be changed into a prime (891967) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6348 + ... + 6486.

It is an arithmetic number, because the mean of its divisors is an integer number (58240).

2⁸⁹¹⁹⁶³ is an apocalyptic number.

891963 is a deficient number, since it is larger than the sum of its proper divisors (505797).

891963 is a wasteful number, since it uses less digits than its factorization.

891963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 196 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 891963 is about 944.4379280821. The cubic root of 891963 is about 96.2606847080.

The spelling of 891963 in words is "eight hundred ninety-one thousand, nine hundred sixty-three".