890321 has 8 divisors (see below), whose sum is σ = 958080. Its totient is φ = 824688.

The previous prime is 890317. The next prime is 890333. The reversal of 890321 is 123098.

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

It is a cyclic number.

It is not a de Polignac number, because 890321 - 2² = 890317 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 890321.

It is not an unprimeable number, because it can be changed into a prime (890371) 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, 395 + ... + 1391.

It is an arithmetic number, because the mean of its divisors is an integer number (119760).

2⁸⁹⁰³²¹ is an apocalyptic number.

It is an amenable number.

890321 is a deficient number, since it is larger than the sum of its proper divisors (67759).

890321 is a wasteful number, since it uses less digits than its factorization.

890321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 890321 is about 943.5682275278. The cubic root of 890321 is about 96.2015801885.

The spelling of 890321 in words is "eight hundred ninety thousand, three hundred twenty-one".