402440244400 has 30 divisors (see below), whose sum is σ = 966862688132. Its totient is φ = 160976097600.

The previous prime is 402440244389. The next prime is 402440244407. The reversal of 402440244400 is 4442044204.

It is not an unprimeable number, because it can be changed into a prime (402440244407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 503049906 + ... + 503050705.

Almost surely, 2^402440244400 is an apocalyptic number.

402440244400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402440244400 is an abundant number, since it is smaller than the sum of its proper divisors (564422443732).

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

402440244400 is a wasteful number, since it uses less digits than its factorization.

402440244400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006100629 (or 1006100618 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 402440244400 its reverse (4442044204), we get a palindrome (406882288604).

The spelling of 402440244400 in words is "four hundred two billion, four hundred forty million, two hundred forty-four thousand, four hundred".