404016687 has 8 divisors (see below), whose sum is σ = 598543280. Its totient is φ = 269344440.

The previous prime is 404016671. The next prime is 404016733. The reversal of 404016687 is 786610404.

It is not a de Polignac number, because 404016687 - 2⁴ = 404016671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404016607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7481764 + ... + 7481817.

It is an arithmetic number, because the mean of its divisors is an integer number (74817910).

Almost surely, 2^404016687 is an apocalyptic number.

404016687 is a deficient number, since it is larger than the sum of its proper divisors (194526593).

404016687 is a wasteful number, since it uses less digits than its factorization.

404016687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14963590 (or 14963584 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 404016687 is about 20100.1663425953. The cubic root of 404016687 is about 739.2643571950.

The spelling of 404016687 in words is "four hundred four million, sixteen thousand, six hundred eighty-seven".