39487934785 has 16 divisors (see below), whose sum is σ = 51135388416. Its totient is φ = 29100420288.

The previous prime is 39487934743. The next prime is 39487934789. The reversal of 39487934785 is 58743978493.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39487934785 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39487934785.

It is not an unprimeable number, because it can be changed into a prime (39487934789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 592069 + ... + 655378.

It is an arithmetic number, because the mean of its divisors is an integer number (3195961776).

Almost surely, 2^39487934785 is an apocalyptic number.

It is an amenable number.

39487934785 is a deficient number, since it is larger than the sum of its proper divisors (11647453631).

39487934785 is a wasteful number, since it uses less digits than its factorization.

39487934785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247952.

The product of its digits is 182891520, while the sum is 67.

The spelling of 39487934785 in words is "thirty-nine billion, four hundred eighty-seven million, nine hundred thirty-four thousand, seven hundred eighty-five".