400040441000 has 32 divisors (see below), whose sum is σ = 936094634280. Its totient is φ = 160016176000.

The previous prime is 400040440949. The next prime is 400040441011. The reversal of 400040441000 is 144040004.

It can be written as a sum of positive squares in 4 ways, for example, as 97890139876 + 302150301124 = 312874^2 + 549682^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 400040441000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200019221 + ... + 200021220.

Almost surely, 2^400040441000 is an apocalyptic number.

400040441000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400040441000 is an abundant number, since it is smaller than the sum of its proper divisors (536054193280).

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

400040441000 is a wasteful number, since it uses less digits than its factorization.

400040441000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400040462 (or 400040448 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 400040441000 its reverse (144040004), we get a palindrome (400184481004).

It can be divided in two parts, 4000404 and 41000, that added together give a palindrome (4041404).

The spelling of 400040441000 in words is "four hundred billion, forty million, four hundred forty-one thousand".