408120823796 has 18 divisors (see below), whose sum is σ = 830817391698. Its totient is φ = 174908924400.

The previous prime is 408120823787. The next prime is 408120823819. The reversal of 408120823796 is 697328021804.

It can be written as a sum of positive squares in only one way, i.e., 312816490000 + 95304333796 = 559300^2 + 308714^2 .

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1041124355 + ... + 1041124746.

It is an arithmetic number, because the mean of its divisors is an integer number (46156521761).

Almost surely, 2^408120823796 is an apocalyptic number.

It is an amenable number.

408120823796 is an abundant number, since it is smaller than the sum of its proper divisors (422696567902).

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

408120823796 is a wasteful number, since it uses less digits than its factorization.

408120823796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082249119 (or 2082249110 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 408120823796 in words is "four hundred eight billion, one hundred twenty million, eight hundred twenty-three thousand, seven hundred ninety-six".