400441322100 has 72 divisors (see below), whose sum is σ = 1161635650560. Its totient is φ = 106505511680.

The previous prime is 400441322077. The next prime is 400441322101. The reversal of 400441322100 is 1223144004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400441322101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1627665 + ... + 1857464.

It is an arithmetic number, because the mean of its divisors is an integer number (16133828480).

Almost surely, 2^400441322100 is an apocalyptic number.

It is an amenable number.

400441322100 is an abundant number, since it is smaller than the sum of its proper divisors (761194328460).

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

400441322100 is a wasteful number, since it uses less digits than its factorization.

400441322100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3485529 (or 3485522 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 400441322100 its reverse (1223144004), we get a palindrome (401664466104).

The spelling of 400441322100 in words is "four hundred billion, four hundred forty-one million, three hundred twenty-two thousand, one hundred".