890491 has 8 divisors (see below), whose sum is σ = 1062144. Its totient is φ = 729960.

The previous prime is 890467. The next prime is 890501. The reversal of 890491 is 194098.

890491 = 116² + 117² + ... + 161².

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

It is not a de Polignac number, because 890491 - 2⁵ = 890459 is a prime.

It is a Duffinian number.

890491 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2605 + ... + 2926.

It is an arithmetic number, because the mean of its divisors is an integer number (132768).

2⁸⁹⁰⁴⁹¹ is an apocalyptic number.

890491 is a deficient number, since it is larger than the sum of its proper divisors (171653).

890491 is a wasteful number, since it uses less digits than its factorization.

890491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5561.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 890491 is about 943.6583068039. The cubic root of 890491 is about 96.2077027847.

The spelling of 890491 in words is "eight hundred ninety thousand, four hundred ninety-one".