100900404 has 72 divisors (see below), whose sum is σ = 288576288. Its totient is φ = 30572640.

The previous prime is 100900391. The next prime is 100900409. The reversal of 100900404 is 404009001.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100900409) 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, 5974 + ... + 15410.

It is an arithmetic number, because the mean of its divisors is an integer number (4008004).

Almost surely, 2^100900404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100900404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144288144).

100900404 is an abundant number, since it is smaller than the sum of its proper divisors (187675884).

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

100900404 is a wasteful number, since it uses less digits than its factorization.

100900404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9467 (or 9453 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 100900404 is about 10044.9193127670. The cubic root of 100900404 is about 465.5478246880.

Adding to 100900404 its reverse (404009001), we get a palindrome (504909405).

The spelling of 100900404 in words is "one hundred million, nine hundred thousand, four hundred four".