401800404 has 12 divisors (see below), whose sum is σ = 937534304. Its totient is φ = 133933464.

The previous prime is 401800381. The next prime is 401800417. The reversal of 401800404 is 404008104.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×401800404² = 322887129309126432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16741672 + ... + 16741695.

Almost surely, 2^401800404 is an apocalyptic number.

It is an amenable number.

401800404 is an abundant number, since it is smaller than the sum of its proper divisors (535733900).

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

401800404 is a wasteful number, since it uses less digits than its factorization.

401800404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33483374 (or 33483372 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 401800404 is about 20044.9595659358. The cubic root of 401800404 is about 737.9101028123.

Adding to 401800404 its reverse (404008104), we get a palindrome (805808508).

It can be divided in two parts, 401800 and 404, that added together give a palindrome (402204).

The spelling of 401800404 in words is "four hundred one million, eight hundred thousand, four hundred four".