891322 has 8 divisors (see below), whose sum is σ = 1347156. Its totient is φ = 442272.

The previous prime is 891311. The next prime is 891323. The reversal of 891322 is 223198.

It can be written as a sum of positive squares in 2 ways, for example, as 755161 + 136161 = 869^2 + 369^2 .

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

It is not an unprimeable number, because it can be changed into a prime (891323) 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, 1353 + ... + 1900.

2⁸⁹¹³²² is an apocalyptic number.

891322 is a deficient number, since it is larger than the sum of its proper divisors (455834).

891322 is a wasteful number, since it uses less digits than its factorization.

891322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3392.

The product of its digits is 864, while the sum is 25.

The square root of 891322 is about 944.0985118090. The cubic root of 891322 is about 96.2376202664.

The spelling of 891322 in words is "eight hundred ninety-one thousand, three hundred twenty-two".