400220004432440 has 16 divisors (see below), whose sum is σ = 900495009973080. Its totient is φ = 160088001772960.

The previous prime is 400220004432431. The next prime is 400220004432511. The reversal of 400220004432440 is 44234400022004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5002750055366 + ... + 5002750055445.

Almost surely, 2^{400220004432440} is an apocalyptic number.

400220004432440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400220004432440 is an abundant number, since it is smaller than the sum of its proper divisors (500275005540640).

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

400220004432440 is a wasteful number, since it uses less digits than its factorization.

400220004432440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10005500110822 (or 10005500110818 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 29.

Adding to 400220004432440 its reverse (44234400022004), we get a palindrome (444454404454444).

The spelling of 400220004432440 in words is "four hundred trillion, two hundred twenty billion, four million, four hundred thirty-two thousand, four hundred forty".