404984880 has 320 divisors, whose sum is σ = 1518652800. Its totient is φ = 98795520.

The previous prime is 404984849. The next prime is 404984887. The reversal of 404984880 is 88489404.

404984880 is a `hidden beast` number, since 40 + 498 + 48 + 80 = 666.

It is a super-2 number, since 2×404984880² = 328025506057228800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404984887) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1505386 + ... + 1505654.

It is an arithmetic number, because the mean of its divisors is an integer number (4745790).

Almost surely, 2^404984880 is an apocalyptic number.

404984880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404984880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (759326400).

404984880 is an abundant number, since it is smaller than the sum of its proper divisors (1113667920).

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

404984880 is a wasteful number, since it uses less digits than its factorization.

404984880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The square root of 404984880 is about 20124.2361345717. The cubic root of 404984880 is about 739.8544149928.

The spelling of 404984880 in words is "four hundred four million, nine hundred eighty-four thousand, eight hundred eighty".