400411240400 has 60 divisors (see below), whose sum is σ = 964220410944. Its totient is φ = 159792816000.

The previous prime is 400411240399. The next prime is 400411240403. The reversal of 400411240400 is 4042114004.

It is a happy number.

It is a super-2 number, since 2×400411240400² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400411240403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 988886 + ... + 1333685.

Almost surely, 2^400411240400 is an apocalyptic number.

400411240400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400411240400 is an abundant number, since it is smaller than the sum of its proper divisors (563809170544).

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

400411240400 is a wasteful number, since it uses less digits than its factorization.

400411240400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323020 (or 2323009 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 400411240400 its reverse (4042114004), we get a palindrome (404453354404).

The spelling of 400411240400 in words is "four hundred billion, four hundred eleven million, two hundred forty thousand, four hundred".