406493 has 8 divisors (see below), whose sum is σ = 427680. Its totient is φ = 385840.

The previous prime is 406481. The next prime is 406499. The reversal of 406493 is 394604.

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

It is a cyclic number.

It is not a de Polignac number, because 406493 - 2¹⁴ = 390109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406499) 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, 3038 + ... + 3168.

It is an arithmetic number, because the mean of its divisors is an integer number (53460).

2⁴⁰⁶⁴⁹³ is an apocalyptic number.

It is an amenable number.

406493 is a deficient number, since it is larger than the sum of its proper divisors (21187).

406493 is a wasteful number, since it uses less digits than its factorization.

406493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 406493 is about 637.5680355852. The cubic root of 406493 is about 74.0771656703.

The spelling of 406493 in words is "four hundred six thousand, four hundred ninety-three".