404464 has 20 divisors (see below), whose sum is σ = 830304. Its totient is φ = 190208.

The previous prime is 404461. The next prime is 404483. The reversal of 404464 is 464404.

It is a happy number.

It is a super-2 number, since 2×404464² = 327182254592, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472 + ... + 1015.

2⁴⁰⁴⁴⁶⁴ is an apocalyptic number.

It is an amenable number.

404464 is an abundant number, since it is smaller than the sum of its proper divisors (425840).

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

404464 is a wasteful number, since it uses less digits than its factorization.

404464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512 (or 1506 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 404464 is about 635.9748422697. The cubic root of 404464 is about 73.9537085693.

Adding to 404464 its reverse (464404), we get a palindrome (868868).

It can be divided in two parts, 404 and 464, that added together give a palindrome (868).

The spelling of 404464 in words is "four hundred four thousand, four hundred sixty-four".