400002223480 has 128 divisors (see below), whose sum is σ = 945983577600. Its totient is φ = 152009206272.

The previous prime is 400002223429. The next prime is 400002223519. The reversal of 400002223480 is 84322200004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87277269 + ... + 87281851.

It is an arithmetic number, because the mean of its divisors is an integer number (7390496700).

Almost surely, 2^400002223480 is an apocalyptic number.

400002223480 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400002223480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (472991788800).

400002223480 is an abundant number, since it is smaller than the sum of its proper divisors (545981354120).

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

400002223480 is a wasteful number, since it uses less digits than its factorization.

400002223480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5813 (or 5809 counting only the distinct ones).

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

Adding to 400002223480 its reverse (84322200004), we get a palindrome (484324423484).

The spelling of 400002223480 in words is "four hundred billion, two million, two hundred twenty-three thousand, four hundred eighty".