404010012 has 24 divisors (see below), whose sum is σ = 1077360256. Its totient is φ = 115431408.

The previous prime is 404010001. The next prime is 404010031. The reversal of 404010012 is 210010404.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 404010012.

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, 2404738 + ... + 2404905.

Almost surely, 2^404010012 is an apocalyptic number.

404010012 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

404010012 is an abundant number, since it is smaller than the sum of its proper divisors (673350244).

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

404010012 is a wasteful number, since it uses less digits than its factorization.

404010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4809657 (or 4809655 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 404010012 is about 20100.0002985075. Note that the first 3 decimals coincide. The cubic root of 404010012 is about 739.2602858972.

Subtracting from 404010012 its sum of digits (12), we obtain a square (404010000 = 20100²).

Adding to 404010012 its reverse (210010404), we get a palindrome (614020416).

The spelling of 404010012 in words is "four hundred four million, ten thousand, twelve".