400011001324 has 72 divisors (see below), whose sum is σ = 812028999600. Its totient is φ = 171809193600.

The previous prime is 400011001279. The next prime is 400011001333. The reversal of 400011001324 is 423100110004.

It is a junction number, because it is equal to n+sod(n) for n = 400011001298 and 400011001307.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3521334 + ... + 3633154.

It is an arithmetic number, because the mean of its divisors is an integer number (11278180550).

Almost surely, 2^400011001324 is an apocalyptic number.

400011001324 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

400011001324 is an abundant number, since it is smaller than the sum of its proper divisors (412017998276).

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

400011001324 is a wasteful number, since it uses less digits than its factorization.

400011001324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112255 (or 112242 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 400011001324 its reverse (423100110004), we get a palindrome (823111111328).

The spelling of 400011001324 in words is "four hundred billion, eleven million, one thousand, three hundred twenty-four".