39685934147 has 4 divisors (see below), whose sum is σ = 39688229880. Its totient is φ = 39683638416.

The previous prime is 39685934137. The next prime is 39685934159. The reversal of 39685934147 is 74143958693.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 39685934147 - 2²⁴ = 39669156931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39685934107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1121738 + ... + 1156575.

It is an arithmetic number, because the mean of its divisors is an integer number (9922057470).

Almost surely, 2^39685934147 is an apocalyptic number.

39685934147 is a deficient number, since it is larger than the sum of its proper divisors (2295733).

39685934147 is a wasteful number, since it uses less digits than its factorization.

39685934147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2295732.

The product of its digits is 19595520, while the sum is 59.

The spelling of 39685934147 in words is "thirty-nine billion, six hundred eighty-five million, nine hundred thirty-four thousand, one hundred forty-seven".