404388488 has 32 divisors (see below), whose sum is σ = 869352960. Its totient is φ = 172748160.

The previous prime is 404388473. The next prime is 404388539. The reversal of 404388488 is 884883404.

It is a happy number.

It is a super-2 number, since 2×404388488² = 327060098453852288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5993 + ... + 29063.

It is an arithmetic number, because the mean of its divisors is an integer number (27167280).

Almost surely, 2^404388488 is an apocalyptic number.

It is an amenable number.

404388488 is an abundant number, since it is smaller than the sum of its proper divisors (464964472).

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

404388488 is a wasteful number, since it uses less digits than its factorization.

404388488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23397 (or 23393 counting only the distinct ones).

The product of its (nonzero) digits is 786432, while the sum is 47.

The square root of 404388488 is about 20109.4129203217. The cubic root of 404388488 is about 739.4910598413.

The spelling of 404388488 in words is "four hundred four million, three hundred eighty-eight thousand, four hundred eighty-eight".