891442 has 8 divisors (see below), whose sum is σ = 1407600. Its totient is φ = 422244.

The previous prime is 891439. The next prime is 891481. The reversal of 891442 is 244198.

891442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 891442.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11692 + ... + 11767.

It is an arithmetic number, because the mean of its divisors is an integer number (175950).

2⁸⁹¹⁴⁴² is an apocalyptic number.

891442 is a deficient number, since it is larger than the sum of its proper divisors (516158).

891442 is a wasteful number, since it uses less digits than its factorization.

891442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23480.

The product of its digits is 2304, while the sum is 28.

The square root of 891442 is about 944.1620623601. The cubic root of 891442 is about 96.2419389437.

The spelling of 891442 in words is "eight hundred ninety-one thousand, four hundred forty-two".