404654 has 4 divisors (see below), whose sum is σ = 606984. Its totient is φ = 202326.

The previous prime is 404597. The next prime is 404671. The reversal of 404654 is 456404.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

404654 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 as a sum of consecutive naturals, namely, 101162 + ... + 101165.

It is an arithmetic number, because the mean of its divisors is an integer number (151746).

2⁴⁰⁴⁶⁵⁴ is an apocalyptic number.

404654 is a deficient number, since it is larger than the sum of its proper divisors (202330).

404654 is a wasteful number, since it uses less digits than its factorization.

404654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202329.

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

The square root of 404654 is about 636.1242017091. The cubic root of 404654 is about 73.9652868597.

The spelling of 404654 in words is "four hundred four thousand, six hundred fifty-four".