891154 has 8 divisors (see below), whose sum is σ = 1458288. Its totient is φ = 405060.

The previous prime is 891151. The next prime is 891161. The reversal of 891154 is 451198.

It is a happy number.

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (891151) 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, 20232 + ... + 20275.

It is an arithmetic number, because the mean of its divisors is an integer number (182286).

2⁸⁹¹¹⁵⁴ is an apocalyptic number.

891154 is a deficient number, since it is larger than the sum of its proper divisors (567134).

891154 is a wasteful number, since it uses less digits than its factorization.

891154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40520.

The product of its digits is 1440, while the sum is 28.

The square root of 891154 is about 944.0095338502. The cubic root of 891154 is about 96.2315734670.

The spelling of 891154 in words is "eight hundred ninety-one thousand, one hundred fifty-four".