404980521 has 32 divisors (see below), whose sum is σ = 602505216. Its totient is φ = 239904000.

The previous prime is 404980483. The next prime is 404980523. The reversal of 404980521 is 125089404.

It is not a de Polignac number, because 404980521 - 2⁷ = 404980393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (404980523) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 296881 + ... + 298241.

It is an arithmetic number, because the mean of its divisors is an integer number (18828288).

Almost surely, 2^404980521 is an apocalyptic number.

It is an amenable number.

404980521 is a deficient number, since it is larger than the sum of its proper divisors (197524695).

404980521 is a wasteful number, since it uses less digits than its factorization.

404980521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 404980521 is about 20124.1278320329. The cubic root of 404980521 is about 739.8517605423.

The spelling of 404980521 in words is "four hundred four million, nine hundred eighty thousand, five hundred twenty-one".