400104504 has 96 divisors (see below), whose sum is σ = 1135854720. Its totient is φ = 126992448.

The previous prime is 400104493. The next prime is 400104517. The reversal of 400104504 is 405401004.

It is a super-3 number, since 3×400104504³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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

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, 507999 + ... + 508785.

It is an arithmetic number, because the mean of its divisors is an integer number (11831820).

Almost surely, 2^400104504 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 400104504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (567927360).

400104504 is an abundant number, since it is smaller than the sum of its proper divisors (735750216).

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

400104504 is a wasteful number, since it uses less digits than its factorization.

400104504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129 (or 1122 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 400104504 is about 20002.6124293803. The cubic root of 400104504 is about 736.8704601455.

Adding to 400104504 its reverse (405401004), we get a palindrome (805505508).

The spelling of 400104504 in words is "four hundred million, one hundred four thousand, five hundred four".