404489420 has 24 divisors (see below), whose sum is σ = 849825648. Its totient is φ = 161720000.

The previous prime is 404489389. The next prime is 404489429. The reversal of 404489420 is 24984404.

It is a super-2 number, since 2×404489420² = 327223381783872800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (404489429) 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, 61910 + ... + 68130.

It is an arithmetic number, because the mean of its divisors is an integer number (35409402).

Almost surely, 2^404489420 is an apocalyptic number.

It is an amenable number.

404489420 is an abundant number, since it is smaller than the sum of its proper divisors (445336228).

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

404489420 is a wasteful number, since it uses less digits than its factorization.

404489420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9481 (or 9479 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 404489420 is about 20111.9223347745. The cubic root of 404489420 is about 739.5525783274.

The spelling of 404489420 in words is "four hundred four million, four hundred eighty-nine thousand, four hundred twenty".