404391480 has 32 divisors (see below), whose sum is σ = 1213174800. Its totient is φ = 107837696.

The previous prime is 404391473. The next prime is 404391499. The reversal of 404391480 is 84193404.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1684845 + ... + 1685084.

Almost surely, 2^404391480 is an apocalyptic number.

404391480 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404391480 is an abundant number, since it is smaller than the sum of its proper divisors (808783320).

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

404391480 is a wasteful number, since it uses less digits than its factorization.

404391480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3369943 (or 3369939 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 404391480 is about 20109.4873132062. The cubic root of 404391480 is about 739.4928836253.

The spelling of 404391480 in words is "four hundred four million, three hundred ninety-one thousand, four hundred eighty".