891452 has 6 divisors (see below), whose sum is σ = 1560048. Its totient is φ = 445724.

The previous prime is 891439. The next prime is 891481. The reversal of 891452 is 254198.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

891452 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 111428 + ... + 111435.

It is an arithmetic number, because the mean of its divisors is an integer number (260008).

2⁸⁹¹⁴⁵² is an apocalyptic number.

It is an amenable number.

891452 is a deficient number, since it is larger than the sum of its proper divisors (668596).

891452 is a wasteful number, since it uses less digits than its factorization.

891452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222867 (or 222865 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 891452 is about 944.1673580462. The cubic root of 891452 is about 96.2422988160.

The spelling of 891452 in words is "eight hundred ninety-one thousand, four hundred fifty-two".