400700404 has 48 divisors (see below), whose sum is σ = 808003728. Its totient is φ = 172228608.

The previous prime is 400700383. The next prime is 400700429. The reversal of 400700404 is 404007004.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 18576100 + 382124304 = 4310^2 + 19548^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83412 + ... + 88084.

It is an arithmetic number, because the mean of its divisors is an integer number (16833411).

Almost surely, 2^400700404 is an apocalyptic number.

It is an amenable number.

400700404 is an abundant number, since it is smaller than the sum of its proper divisors (407303324).

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

400700404 is a wasteful number, since it uses less digits than its factorization.

400700404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4804 (or 4802 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 400700404 is about 20017.5024416134. The cubic root of 400700404 is about 737.2361006966.

Adding to 400700404 its reverse (404007004), we get a palindrome (804707408).

It can be divided in two parts, 400700 and 404, that added together give a palindrome (401104).

The spelling of 400700404 in words is "four hundred million, seven hundred thousand, four hundred four".