490423 has 4 divisors (see below), whose sum is σ = 492048.
Its totient is φ = 488800.
The previous prime is 490421. The next prime is 490453. The reversal of 490423 is 324094.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 490423 - 21 = 490421 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 490394 and 490403.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (490421) 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, 211 + ... + 1012.
It is an arithmetic number, because the mean of its divisors is an integer number (123012).
2490423 is an apocalyptic number.
490423 is a deficient number, since it is larger than the sum of its proper divisors (1625).
490423 is a wasteful number, since it uses less digits than its factorization.
490423 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1624.
The product of its (nonzero) digits is 864, while the sum is 22.
The square root of 490423 is about 700.3020776779.
The cubic root of 490423 is about 78.8600309564.
The spelling of 490423 in words is "four hundred ninety thousand, four hundred twenty-three".