408623809838 has 16 divisors (see below), whose sum is σ = 614963857200. Its totient is φ = 203636376000.

The previous prime is 408623809819. The next prime is 408623809843. The reversal of 408623809838 is 838908326804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1463813 + ... + 1720463.

It is an arithmetic number, because the mean of its divisors is an integer number (38435241075).

Almost surely, 2^408623809838 is an apocalyptic number.

408623809838 is a deficient number, since it is larger than the sum of its proper divisors (206340047362).

408623809838 is a wasteful number, since it uses less digits than its factorization.

408623809838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259283.

The product of its (nonzero) digits is 15925248, while the sum is 59.

The spelling of 408623809838 in words is "four hundred eight billion, six hundred twenty-three million, eight hundred nine thousand, eight hundred thirty-eight".