39986474434 has 32 divisors (see below), whose sum is σ = 65338488000. Its totient is φ = 18280874304.

The previous prime is 39986474399. The next prime is 39986474443. The reversal of 39986474434 is 43447468993.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3894852 + ... + 3905104.

It is an arithmetic number, because the mean of its divisors is an integer number (2041827750).

Almost surely, 2^39986474434 is an apocalyptic number.

39986474434 is a deficient number, since it is larger than the sum of its proper divisors (25352013566).

39986474434 is a wasteful number, since it uses less digits than its factorization.

39986474434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13842.

The product of its digits is 62705664, while the sum is 61.

The spelling of 39986474434 in words is "thirty-nine billion, nine hundred eighty-six million, four hundred seventy-four thousand, four hundred thirty-four".