800490 has 16 divisors (see below), whose sum is σ = 1921248. Its totient is φ = 213456.

The previous prime is 800483. The next prime is 800497. The reversal of 800490 is 94008.

It is an interprime number because it is at equal distance from previous prime (800483) and next prime (800497).

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (800497) by changing a digit.

800490 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 13312 + ... + 13371.

It is an arithmetic number, because the mean of its divisors is an integer number (120078).

2⁸⁰⁰⁴⁹⁰ is an apocalyptic number.

800490 is an abundant number, since it is smaller than the sum of its proper divisors (1120758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

800490 is a wasteful number, since it uses less digits than its factorization.

800490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26693.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 800490 is about 894.7010673963. The cubic root of 800490 is about 92.8507259584.

Adding to 800490 its reverse (94008), we get a palindrome (894498).

The spelling of 800490 in words is "eight hundred thousand, four hundred ninety".