39999200004 has 135 divisors (see below), whose sum is σ = 107575351653. Its totient is φ = 12959870400.

The previous prime is 39999199991. The next prime is 39999200009. The reversal of 39999200004 is 40000299993.

The square root of 39999200004 is 199998.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1927385604 + 38071814400 = 43902^2 + 195120^2 .

It is not an unprimeable number, because it can be changed into a prime (39999200009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 147598389 + ... + 147598659.

Almost surely, 2^39999200004 is an apocalyptic number.

39999200004 is the 199998-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39999200004

39999200004 is an abundant number, since it is smaller than the sum of its proper divisors (67576151649).

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

39999200004 is an equidigital number, since it uses as much as digits as its factorization.

39999200004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

Adding to 39999200004 its reverse (40000299993), we get a palindrome (79999499997).

The spelling of 39999200004 in words is "thirty-nine billion, nine hundred ninety-nine million, two hundred thousand, four".