891449 has 8 divisors (see below), whose sum is σ = 981120. Its totient is φ = 804816.

The previous prime is 891439. The next prime is 891481. The reversal of 891449 is 944198.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-891449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (891409) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 119 + ... + 1340.

It is an arithmetic number, because the mean of its divisors is an integer number (122640).

2⁸⁹¹⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

891449 is a deficient number, since it is larger than the sum of its proper divisors (89671).

891449 is a wasteful number, since it uses less digits than its factorization.

891449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519.

The product of its digits is 10368, while the sum is 35.

The square root of 891449 is about 944.1657693435. The cubic root of 891449 is about 96.2421908546.

The spelling of 891449 in words is "eight hundred ninety-one thousand, four hundred forty-nine".