100000404 has 72 divisors (see below), whose sum is σ = 291939648. Its totient is φ = 28270080.

The previous prime is 100000399. The next prime is 100000421. The reversal of 100000404 is 404000001.

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 23 ways as a sum of consecutive naturals, for example, 22399 + ... + 26489.

Almost surely, 2^100000404 is an apocalyptic number.

100000404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100000404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145969824).

100000404 is an abundant number, since it is smaller than the sum of its proper divisors (191939244).

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

100000404 is a wasteful number, since it uses less digits than its factorization.

100000404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4205 (or 4200 counting only the distinct ones).

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

The square root of 100000404 is about 10000.0201999796. The cubic root of 100000404 is about 464.1595084277.

Adding to 100000404 its reverse (404000001), we get a palindrome (504000405).

The spelling of 100000404 in words is "one hundred million, four hundred four", and thus it is an aban number.