39994240001 has 4 divisors (see below), whose sum is σ = 42346842372. Its totient is φ = 37641637632.

The previous prime is 39994239991. The next prime is 39994240003. The reversal of 39994240001 is 10004249993.

39994240001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10004249993 = 23 ⋅434967391.

It can be written as a sum of positive squares in 2 ways, for example, as 28031130625 + 11963109376 = 167425^2 + 109376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39994240001 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 (39994240003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1176301160 + ... + 1176301193.

It is an arithmetic number, because the mean of its divisors is an integer number (10586710593).

Almost surely, 2^39994240001 is an apocalyptic number.

It is an amenable number.

39994240001 is a deficient number, since it is larger than the sum of its proper divisors (2352602371).

39994240001 is a wasteful number, since it uses less digits than its factorization.

39994240001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2352602370.

The product of its (nonzero) digits is 69984, while the sum is 41.

Adding to 39994240001 its reverse (10004249993), we get a palindrome (49998489994).

The spelling of 39994240001 in words is "thirty-nine billion, nine hundred ninety-four million, two hundred forty thousand, one".