396240004004 has 24 divisors (see below), whose sum is σ = 753368514360. Its totient is φ = 181261592064.

The previous prime is 396240003997. The next prime is 396240004067. The reversal of 396240004004 is 400400042693.

It can be written as a sum of positive squares in 4 ways, for example, as 5952431104 + 390287572900 = 77152^2 + 624730^2 .

It is a super-2 number, since 2×396240004004² (a number of 24 digits) contains 22 as substring.

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, 33710939 + ... + 33722690.

It is an arithmetic number, because the mean of its divisors is an integer number (31390354765).

Almost surely, 2^396240004004 is an apocalyptic number.

It is an amenable number.

396240004004 is a deficient number, since it is larger than the sum of its proper divisors (357128510356).

396240004004 is a wasteful number, since it uses less digits than its factorization.

396240004004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67433759 (or 67433757 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 396240004004 its reverse (400400042693), we get a palindrome (796640046697).

The spelling of 396240004004 in words is "three hundred ninety-six billion, two hundred forty million, four thousand, four".