400404484848 has 40 divisors (see below), whose sum is σ = 1034479945296. Its totient is φ = 133455040000.

The previous prime is 400404484841. The next prime is 400404484861. The reversal of 400404484848 is 848484404004.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 400404484797 and 400404484806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400404484841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89548 + ... + 899348.

Almost surely, 2^400404484848 is an apocalyptic number.

400404484848 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

400404484848 is an abundant number, since it is smaller than the sum of its proper divisors (634075460448).

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

400404484848 is a wasteful number, since it uses less digits than its factorization.

400404484848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820113 (or 820107 counting only the distinct ones).

The product of its (nonzero) digits is 2097152, while the sum is 48.

The spelling of 400404484848 in words is "four hundred billion, four hundred four million, four hundred eighty-four thousand, eight hundred forty-eight".