494405 has 8 divisors (see below), whose sum is σ = 603384. Its totient is φ = 388800.

The previous prime is 494387. The next prime is 494407. The reversal of 494405 is 504494.

It can be written as a sum of positive squares in 4 ways, for example, as 12769 + 481636 = 113^2 + 694^2 .

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

It is not a de Polignac number, because 494405 - 2⁶ = 494341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 494405.

It is not an unprimeable number, because it can be changed into a prime (494407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506 + ... + 1115.

It is an arithmetic number, because the mean of its divisors is an integer number (75423).

2⁴⁹⁴⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

494405 is a deficient number, since it is larger than the sum of its proper divisors (108979).

494405 is a wasteful number, since it uses less digits than its factorization.

494405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 494405 is about 703.1393887417. The cubic root of 494405 is about 79.0728911181.

Adding to 494405 its reverse (504494), we get a palindrome (998899).

The spelling of 494405 in words is "four hundred ninety-four thousand, four hundred five".