39487494871 has 16 divisors (see below), whose sum is σ = 44137368576. Its totient is φ = 35014680000.

The previous prime is 39487494817. The next prime is 39487494877. The reversal of 39487494871 is 17849478493.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 39487494871 - 2¹³ = 39487486679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39487494877) 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 15 ways as a sum of consecutive naturals, for example, 4095226 + ... + 4104856.

It is an arithmetic number, because the mean of its divisors is an integer number (2758585536).

Almost surely, 2^39487494871 is an apocalyptic number.

39487494871 is a deficient number, since it is larger than the sum of its proper divisors (4649873705).

39487494871 is a wasteful number, since it uses less digits than its factorization.

39487494871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18774.

The product of its digits is 48771072, while the sum is 64.

The spelling of 39487494871 in words is "thirty-nine billion, four hundred eighty-seven million, four hundred ninety-four thousand, eight hundred seventy-one".