404049987 has 24 divisors (see below), whose sum is σ = 640523520. Its totient is φ = 243402480.

The previous prime is 404049979. The next prime is 404050013. The reversal of 404049987 is 789940404.

404049987 is a `hidden beast` number, since 40 + 40 + 499 + 87 = 666.

It is not a de Polignac number, because 404049987 - 2³ = 404049979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (404049917) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4314 + ... + 28752.

It is an arithmetic number, because the mean of its divisors is an integer number (26688480).

Almost surely, 2^404049987 is an apocalyptic number.

404049987 is a deficient number, since it is larger than the sum of its proper divisors (236473533).

404049987 is a wasteful number, since it uses less digits than its factorization.

404049987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24623 (or 24620 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 404049987 is about 20100.9946768810. The cubic root of 404049987 is about 739.2846672693.

The spelling of 404049987 in words is "four hundred four million, forty-nine thousand, nine hundred eighty-seven".