406454 has 4 divisors (see below), whose sum is σ = 609684. Its totient is φ = 203226.

The previous prime is 406447. The next prime is 406481. The reversal of 406454 is 454604.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a zygodrome in base 7.

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 406454.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101612 + ... + 101615.

It is an arithmetic number, because the mean of its divisors is an integer number (152421).

2⁴⁰⁶⁴⁵⁴ is an apocalyptic number.

406454 is a deficient number, since it is larger than the sum of its proper divisors (203230).

406454 is a wasteful number, since it uses less digits than its factorization.

406454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203229.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 406454 is about 637.5374498804. The cubic root of 406454 is about 74.0747965423.

The spelling of 406454 in words is "four hundred six thousand, four hundred fifty-four".