39199720001 has 8 divisors (see below), whose sum is σ = 42588669480. Its totient is φ = 35864140032.

The previous prime is 39199719997. The next prime is 39199720013. The reversal of 39199720001 is 10002799193.

39199720001 = 139999² + 140000².

It can be written as a sum of positive squares in 4 ways, for example, as 5682898225 + 33516821776 = 75385^2 + 183076^2 .

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 39199720001 - 2² = 39199719997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39199720081) 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, 13340846 + ... + 13343783.

It is an arithmetic number, because the mean of its divisors is an integer number (5323583685).

Almost surely, 2^39199720001 is an apocalyptic number.

39199720001 is the 140000-th centered square number.

It is an amenable number.

39199720001 is a deficient number, since it is larger than the sum of its proper divisors (3388949479).

39199720001 is a wasteful number, since it uses less digits than its factorization.

39199720001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26684755.

The product of its (nonzero) digits is 30618, while the sum is 41.

The spelling of 39199720001 in words is "thirty-nine billion, one hundred ninety-nine million, seven hundred twenty thousand, one".