39999200005 has 8 divisors (see below), whose sum is σ = 48029956632. Its totient is φ = 31978748928.

The previous prime is 39999199991. The next prime is 39999200009. The reversal of 39999200005 is 50000299993.

It is a happy number.

It is a Cunningham number, because it is equal to 199998²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 39999200004 = 1^2 + 199998^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39999200005 - 2¹⁷ = 39999068933 is a prime.

It is a Duffinian number.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2567844 + ... + 2583373.

It is an arithmetic number, because the mean of its divisors is an integer number (6003744579).

Almost surely, 2^39999200005 is an apocalyptic number.

It is an amenable number.

39999200005 is a deficient number, since it is larger than the sum of its proper divisors (8030756627).

39999200005 is a wasteful number, since it uses less digits than its factorization.

39999200005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5152775.

The product of its (nonzero) digits is 196830, while the sum is 46.

Adding to 39999200005 its reverse (50000299993), we get a palindrome (89999499998).

The spelling of 39999200005 in words is "thirty-nine billion, nine hundred ninety-nine million, two hundred thousand, five".