494451 has 8 divisors (see below), whose sum is σ = 732560. Its totient is φ = 329616.

The previous prime is 494443. The next prime is 494471. The reversal of 494451 is 154494.

It is not a de Polignac number, because 494451 - 2³ = 494443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 18313 = 494451 / (4 + 9 + 4 + 4 + 5 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494441) 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, 9130 + ... + 9183.

It is an arithmetic number, because the mean of its divisors is an integer number (91570).

2⁴⁹⁴⁴⁵¹ is an apocalyptic number.

494451 is a deficient number, since it is larger than the sum of its proper divisors (238109).

494451 is a wasteful number, since it uses less digits than its factorization.

494451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18322 (or 18316 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 494451 is about 703.1720984226. The cubic root of 494451 is about 79.0753433858.

The spelling of 494451 in words is "four hundred ninety-four thousand, four hundred fifty-one".