891434 has 8 divisors (see below), whose sum is σ = 1395360. Its totient is φ = 426316.

The previous prime is 891427. The next prime is 891439. The reversal of 891434 is 434198.

891434 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 junction number, because it is equal to n+sod(n) for n = 891397 and 891406.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 891434.

It is not an unprimeable number, because it can be changed into a prime (891439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9644 + ... + 9735.

It is an arithmetic number, because the mean of its divisors is an integer number (174420).

2⁸⁹¹⁴³⁴ is an apocalyptic number.

891434 is a deficient number, since it is larger than the sum of its proper divisors (503926).

891434 is a wasteful number, since it uses less digits than its factorization.

891434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19404.

The product of its digits is 3456, while the sum is 29.

The square root of 891434 is about 944.1578257897. The cubic root of 891434 is about 96.2416510440.

The spelling of 891434 in words is "eight hundred ninety-one thousand, four hundred thirty-four".