10000404 has 18 divisors (see below), whose sum is σ = 25278890. Its totient is φ = 3333456.

The previous prime is 10000379. The next prime is 10000439. The reversal of 10000404 is 40400001.

It can be written as a sum of positive squares in only one way, i.e., 9363600 + 636804 = 3060^2 + 798^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138859 + ... + 138930.

Almost surely, 2^10000404 is an apocalyptic number.

It is an amenable number.

10000404 is an abundant number, since it is smaller than the sum of its proper divisors (15278486).

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

10000404 is a wasteful number, since it uses less digits than its factorization.

10000404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277799 (or 277794 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 10000404 is about 3162.3415375320. The cubic root of 10000404 is about 215.4463702695.

Adding to 10000404 its reverse (40400001), we get a palindrome (50400405).

It can be divided in two parts, 10000 and 404, that added together give a square (10404 = 102²).

The spelling of 10000404 in words is "ten million, four hundred four", and thus it is an aban number.