400808880448 has 28 divisors (see below), whose sum is σ = 804937724640. Its totient is φ = 197989926272.

The previous prime is 400808880421. The next prime is 400808880467. The reversal of 400808880448 is 844088808004.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 400808880395 and 400808880404.

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, 37721428 + ... + 37732051.

It is an arithmetic number, because the mean of its divisors is an integer number (28747775880).

Almost surely, 2^400808880448 is an apocalyptic number.

It is an amenable number.

400808880448 is an abundant number, since it is smaller than the sum of its proper divisors (404128844192).

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

400808880448 is an equidigital number, since it uses as much as digits as its factorization.

400808880448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75453574 (or 75453564 counting only the distinct ones).

The product of its (nonzero) digits is 2097152, while the sum is 52.

The spelling of 400808880448 in words is "four hundred billion, eight hundred eight million, eight hundred eighty thousand, four hundred forty-eight".