406494 has 24 divisors (see below), whose sum is σ = 961272. Its totient is φ = 123120.

The previous prime is 406481. The next prime is 406499. The reversal of 406494 is 494604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406499) by changing a digit.

406494 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 829 + ... + 1224.

It is an arithmetic number, because the mean of its divisors is an integer number (40053).

2⁴⁰⁶⁴⁹⁴ is an apocalyptic number.

406494 is an abundant number, since it is smaller than the sum of its proper divisors (554778).

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

406494 is a wasteful number, since it uses less digits than its factorization.

406494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072 (or 2069 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 406494 is about 637.5688198148. The cubic root of 406494 is about 74.0772264152.

It can be divided in two parts, 406 and 494, that added together give a square (900 = 30²).

The spelling of 406494 in words is "four hundred six thousand, four hundred ninety-four".