39850687699 has 4 divisors (see below), whose sum is σ = 39871586664. Its totient is φ = 39829788736.

The previous prime is 39850687693. The next prime is 39850687711. The reversal of 39850687699 is 99678605893.

39850687699 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39850687699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39850687693) 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, 10446622 + ... + 10450435.

It is an arithmetic number, because the mean of its divisors is an integer number (9967896666).

Almost surely, 2^39850687699 is an apocalyptic number.

39850687699 is a deficient number, since it is larger than the sum of its proper divisors (20898965).

39850687699 is a wasteful number, since it uses less digits than its factorization.

39850687699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20898964.

The product of its (nonzero) digits is 176359680, while the sum is 70.

The spelling of 39850687699 in words is "thirty-nine billion, eight hundred fifty million, six hundred eighty-seven thousand, six hundred ninety-nine".