400340441140 has 48 divisors (see below), whose sum is σ = 842666826960. Its totient is φ = 159764618240.

The previous prime is 400340441119. The next prime is 400340441143. The reversal of 400340441140 is 41144043004.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 41139197584 + 359201243556 = 202828^2 + 599334^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400340441143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39503514 + ... + 39513646.

It is an arithmetic number, because the mean of its divisors is an integer number (17555558895).

Almost surely, 2^400340441140 is an apocalyptic number.

It is an amenable number.

400340441140 is an abundant number, since it is smaller than the sum of its proper divisors (442326385820).

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

400340441140 is a wasteful number, since it uses less digits than its factorization.

400340441140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14532 (or 14530 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 400340441140 its reverse (41144043004), we get a palindrome (441484484144).

The spelling of 400340441140 in words is "four hundred billion, three hundred forty million, four hundred forty-one thousand, one hundred forty".