404663500 has 48 divisors (see below), whose sum is σ = 886092480. Its totient is φ = 161443200.

The previous prime is 404663473. The next prime is 404663503. The reversal of 404663500 is 5366404.

It is not an unprimeable number, because it can be changed into a prime (404663503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250696 + ... + 252304.

It is an arithmetic number, because the mean of its divisors is an integer number (18460260).

Almost surely, 2^404663500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404663500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (443046240).

404663500 is an abundant number, since it is smaller than the sum of its proper divisors (481428980).

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

404663500 is a wasteful number, since it uses less digits than its factorization.

404663500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131 (or 2119 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 404663500 is about 20116.2496504691. The cubic root of 404663500 is about 739.6586567909.

The spelling of 404663500 in words is "four hundred four million, six hundred sixty-three thousand, five hundred".